// dottle bot
#ifndef ONLINE_JUDGE
#define DEBUG
#endif
#include <stdio.h>
#include <string.h>
#include <algorithm>
#include <queue>
#include <vector>
#include <bitset>
#include <map>
#include <assert.h>
#include <math.h>
#include <set>
#include <random>
std::mt19937_64 rnd(586666);
#define nln puts("")
#define od(x) printf("%d",x)
#define odb(x) printf("%d ",x)
#define odl(x) printf("%d\n",x)
#define odp(x,y) printf("%d %d\n",x,y)
#define ol(x) puts("")
#define old(x) printf("%lld",x)
#define oldb(x) printf("%lld ",x)
#define oldl(x) printf("%lld\n",x)
#define oldp(x,y) printf("%lld %lld\n",x,y)
#define rg(x) for(int i=1;i<=(x);i++){
#define rg_(i,x) for(int i=1;i<=(x);i++){
#define fe(u) for(int i=h[u];i;i=e[i].nxt){int v=e[i].v;
#define gr }
#define rrg(x) for(int i=0;i<(x);i++){
#define rdln(a) a[i]=read();
#define rdln0(a,x) rrg(x) rdln(a) gr
#define rdln1(a,x) rg(x) rdln(a) gr
#define int long long
const int mod=998244353;
#ifdef int
#define inf 0x3f3f3f3f3f3f3f3fll
#else
#define inf 0x3f3f3f3f
#endif
inline int min(int a,int b){return a>b?b:a;}
inline int max(int a,int b){return a<b?b:a;}
#define cmlSEGMIN
#define cmlSEGMAX
#define cmlSEGSUM
struct SegTreeAl{
#ifdef cmlSEGMIN
int minn[1000005<<2];
#endif
#ifdef cmlSEGMAX
int maxn[1000005<<2];
#endif
#ifdef cmlSEGSUM
int sum[1000005<<2];
#endif
int tag[1000005<<2];
#ifdef cmlSEGSUM
void pushdown(int o,int l,int r)
#else
void pushdown(int o)
#endif
{
int&t=tag[o];
#ifdef cmlSEGMIN
minn[o<<1]+=t;
minn[o<<1|1]+=t;
#endif
#ifdef cmlSEGMAX
maxn[o<<1]+=t;
maxn[o<<1|1]+=t;
#endif
#ifdef cmlSEGSUM
int m=l+r>>1;
sum[o<<1]+=t*(m-l+1);
sum[o<<1|1]+=t*(r-m);
#endif
tag[o<<1]+=t;
tag[o<<1|1]+=t;
t=0;
}
void add(int o,int l,int r,int L,int R,int v)
{
if(L<=l&&r<=R)
{
#ifdef cmlSEGMAX
maxn[o]+=v;
#endif
#ifdef cmlSEGMIN
minn[o]+=v;
#endif
#ifdef cmlSEGSUM
sum[o]+=v*(r-l+1);
#endif
tag[o]+=v;
return;
}
int m=l+r>>1;
#ifdef cmlSEGSUM
pushdown(o,l,r);
#else
pushdown(o);
#endif
if(L<=m)add(o<<1,l,m,L,R,v);
if(m<R)add(o<<1|1,m+1,r,L,R,v);
#ifdef cmlSEGMAX
maxn[o]=max(maxn[o<<1],maxn[o<<1|1]);
#endif
#ifdef cmlSEGMIN
minn[o]=min(minn[o<<1],minn[o<<1|1]);
#endif
#ifdef cmlSEGSUM
sum[o]=sum[o<<1]+sum[o<<1|1];
#endif
}
#ifdef cmlSEGMIN
int qmin(int o,int l,int r,int L,int R)
{
if(L<=l&&r<=R)
{
return minn[o];
}
int m=l+r>>1,res=inf;
#ifdef cmlSEGSUM
pushdown(o,l,r);
#else
pushdown(o);
#endif
if(L<=m)res=min(res,qmin(o<<1,l,m,L,R));
if(m<R)res=min(res,qmin(o<<1|1,m+1,r,L,R));
return res;
}
#endif
#ifdef cmlSEGMAX
int qmax(int o,int l,int r,int L,int R)
{
if(L<=l&&r<=R)
{
return maxn[o];
}
int m=l+r>>1,res=-inf;
#ifdef cmlSEGSUM
pushdown(o,l,r);
#else
pushdown(o);
#endif
if(L<=m)res=max(res,qmax(o<<1,l,m,L,R));
if(m<R)res=max(res,qmax(o<<1|1,m+1,r,L,R));
return res;
}
#endif
#ifdef cmlSEGSUM
int qsum(int o,int l,int r,int L,int R)
{
if(L<=l&&r<=R)
{
return sum[o];
}
int m=l+r>>1,res=0;
#ifdef cmlSEGSUM
pushdown(o,l,r);
#else
pushdown(o);
#endif
if(L<=m)res+=qsum(o<<1,l,m,L,R);
if(m<R)res+=qsum(o<<1|1,m+1,r,L,R);
return res;
}
#endif
};
#define newe(n) struct Edge{int v,w,nxt;}e[2*n+5];\
typedef int arr[n+5];\
arr h;\
int cnt=1;\
inline void addedge(int u,int v,int w){e[cnt]=(Edge){v,w,h[u]};h[u]=cnt++;}\
struct node{\
int u,d;\
bool operator<(const node&b)const{return d>b.d;}\
};\
void dij(int s,int *d,int N)\
{\
memset(d,0x3f,sizeof(int)*(N+3));\
d[s]=0;std::priority_queue<node>q;q.push((node){s,0});\
while(!q.empty())\
{\
int u=q.top().u,D=q.top().d;q.pop();if(D!=d[u])continue;\
for(int i=h[u];i;i=e[i].nxt){int v=e[i].v,w=e[i].w;\
if(d[u]+w<d[v])d[v]=d[u]+w,q.push((node){v,d[v]});\
}\
}\
}
#define mgs int fa[1<<22],sz[1<<22];\
inline int f(int x){return x==fa[x]?x:fa[x]=f(fa[x]);}\
inline int uf(int x,int y)\
{\
int fx=f(x),fy=f(y);\
if(fx==fy)return 0;\
if(sz[fx]>sz[fy])fx^=fy^=fx^=fy;\
fa[fx]=fy,sz[fy]+=sz[fx];\
return 1;\
}
inline int read()
{
int num=0,f=1;char c=getchar();
while(c<48||c>57){if(c=='-')f=-1;c=getchar();}
while(c>47&&c<58)num=num*10+(c^48),c=getchar();
return num*f;
}
inline int re1d()
{
char c=getchar();
while(c<48||c>49)c=getchar();
return c&1;
}
#ifdef cmlBIT
struct BIT{int a[1<<20|1],n;
void add(int x,int p){while(x<=n)a[x]+=p,x+=x&-x;}
int operator[](int x){int res=0;while(x)res+=a[x],x-=x&-x;return res;}
int operator()(int l,int r){return (*this)[r]-(*this)[l-1];}};
#endif
int rnv[1000005];
// #define COMB
#ifdef COMB
#ifndef int
#define int long long
#endif
int fac[1000005],inv[1000005];
#endif
void initprog()
{
#ifdef COMB
fac[0]=inv[0]=inv[1]=1;
rg(1000000)fac[i]=fac[i-1]*i%mod;gr
rg(1000000)if(i>1)inv[i]=inv[mod%i]*(mod-mod/i)%mod;gr
rg(1000000)rnv[i]=inv[i];gr
rg(1000000)inv[i]=inv[i]*inv[i-1]%mod;gr
#endif
}
#ifdef COMB
int C(int n,int m)
{
if(n==m||m==0)return 1;
if(n<m)return 0;
return fac[n]*inv[m]%mod*inv[n-m]%mod;
}
#endif
inline int qp(int a,int b){int c=1;while(b){if(b&1)c=c*a%mod;a=a*a%mod;b>>=1;}return c;}
inline int mae(int &a,int b){a+=b;if(a>=mod)a-=mod;return a;}
inline int mde(int &a,int b){a+=mod-b;if(a>=mod)a-=mod;return a;}
inline int mle(int &a,int b){a=a*b%mod;return a;}
inline int mve(int &a,int b){a=a*qp(b,mod-2)%mod;return a;}
inline int mxe(int &a,int b){return a=a>b?a:b;}
inline int mne(int &a,int b){return a=a<b?a:b;}
inline int ae(int a,int b){int c=a+b;return c>=mod?c-mod:c;}
inline int de(int a,int b){return ae(a,mod-b);}
inline int me(int a,int b){return a*b%mod;}
inline int mive(int &a,int b){a=a*rnv[b]%mod;return a;}
inline int ive(int a,int b){return a*rnv[b]%mod;}
inline int ve(int a,int b){return a*qp(b,mod-2)%mod;}
#ifdef cmlST
struct STmin{
int a[21][1000005],n;
void init(int N,int *b)
{
n=N;
rg(n)a[0][i]=b[i];gr
rg(20)rg_(j,n-(1<<i)+1)a[i][j]=min(a[i-1][j],a[i-1][j+(1<<i-1)]);gr gr
}
int q(int l,int r)
{
int d=std::__lg(r-l+1);
return min(a[d][l],a[d][r-(1<<d)+1]);
}
};
struct STmax{
int a[21][1000005],n;
void init(int N,int *b)
{
n=N;
rg(n)a[0][i]=b[i];gr
rg(20)rg_(j,n-(1<<i)+1)a[i][j]=max(a[i-1][j],a[i-1][j+(1<<i-1)]);gr gr
}
int q(int l,int r)
{
int d=std::__lg(r-l+1);
return max(a[d][l],a[d][r-(1<<d)+1]);
}
};
#endif
#ifdef cmlSAM
struct SAM{
int ch[1000005][26],lnk[1000005],len[1000005],lst=1,cc=1;
int sz[1000005];
void insert(int c)
{
len[++cc]=len[lst]+1;sz[cc]=1;
int p=lst;lst=cc;
while(p&&ch[p][c]==0)ch[p][c]=cc,p=lnk[p];
if(p==0)lnk[cc]=1;
else
{
int x=ch[p][c];
if(len[p]+1==len[x])lnk[cc]=x;
else
{
int q=cc;++cc;
lnk[cc]=lnk[x];
lnk[x]=lnk[q]=cc;
len[cc]=len[p]+1;
memcpy(ch[cc],ch[x],sizeof(ch[cc]));
while(p&&ch[p][c]==x)ch[p][c]=cc,p=lnk[p];
}
}
}
newe(1000005);
long long ans;
void build()
{
rg(cc)addedge(lnk[i],i,0);gr
}
void dfs(int u)
{
fe(u)dfs(v),sz[u]+=sz[v];gr
if(sz[u]>1)ans=max(ans,1ll*sz[u]*len[u]);
}
}t;
#endif
#include <unordered_set>
std::unordered_set<int>s[77];
int n,m;
int sz[77];
int a[1234567];
int cc,z;
int tot=0;
void join(int x,int d,std::vector<int>&tmp)
{
if(s[d].count(x))return;
tmp.push_back(x);
s[d].insert(x);
// if(__builtin_popcountll(x)!=d)
// {
// printf("%lld %d\n",x,d);
// exit(0);
// }
for(int t:s[d])
if(__builtin_popcountll(t|x)==d+1)
join(t|x,d+1,tmp);
}
int vis[123456];
bool dfs(int u,int tag,int nw,int lst=0,int prev=0)
{
if(nw>n||u>n||z>m)return 0;
const int Z=60;
if(u>Z||nw>Z)return 0;
vis[z]=1;
if(z==m)
{
// puts("found");
int sum=0;
int res=(1ll<<n)-1;
rrg(n+1)for(int j:s[i])res&=~j;gr
rrg(n+1)for(int j:s[i])oldb(j?j:0);gr puts("");
// rrg(n+1)sum+=s[i].size();gr
// assert(sum==z);
return 1;
}
const int B=40;
if(s[u].size()>=1&&u<=B)
{
if(dfs(u+1,0,nw,prev,prev))return 1;
}
std::vector<int>tmp;
int v=(*s[u-1].begin())|(1ll<<nw);
// odb(lst),odp(v,u);
join(v,u,tmp);
z+=tmp.size();
if(dfs(u,1,nw+1,lst,v))return 1;
for(int t:tmp)s[__builtin_popcountll(t)].erase(t);
z-=tmp.size();
if(s[u].size()>=1&&u>B)
{
if(dfs(u+1,0,nw,prev,prev))return 1;
}
// if(tag&&u>B)
// {
// if(dfs(u+1,0,nw,prev,prev))return 1;
// }
return 0;
}
signed main()
{
initprog();
s[0].insert(0);
int T=read();rg(T)
n=read(),m=read();
rg(n)s[i].clear();gr
rg(n)sz[i]=0;gr sz[0]=1;
cc=0;z=1;
dfs(1,0,0);
// rg(1830)od(vis[i]);gr puts("");
// odl(tot);
gr
return 0;
}