#include<bits/stdc++.h>
using namespace std;
namespace my_std{
	#define ll long long
	#define bl bool
	ll my_pow(ll a,ll b,ll mod){
		ll res=1;
		if(!b) return 1;
		while(b){
			if(b&1) res=(res*a)%mod;
			a=(a*a)%mod;
			b>>=1;
		}
		return res;
	}
	ll qpow(ll a,ll b){
		ll res=1;
		if(!b) return 1;
		while(b){
			if(b&1) res*=a;
			a*=a;
			b>>=1;
		}
		return res;
	}
	#define db double
	#define pf printf
	#define pc putchar
	#define fr(i,x,y) for(register ll i=(x);i<=(y);i++)
	#define pfr(i,x,y) for(register ll i=(x);i>=(y);i--)
	#define go(u) for(ll i=head[u];i;i=e[i].nxt)
	#define enter pc('\n')
	#define space pc(' ')
	#define fir first
	#define sec second
	#define MP make_pair
	#define il inline
	#define inf 8e18
	#define random(x) rand()*rand()%(x)
	#define inv(a,mod) my_pow((a),(mod-2),(mod))
	il ll read(){
		ll sum=0,f=1;
		char ch=0;
		while(!isdigit(ch)){
			if(ch=='-') f=-1;
			ch=getchar();
		}
		while(isdigit(ch)){
			sum=sum*10+(ch^48);
			ch=getchar();
		}
		return sum*f;
	}
	il void write(ll x){
		if(x<0){
			x=-x;
			pc('-');
		}
		if(x>9) write(x/10);
		pc(x%10+'0');
	}
	il void writeln(ll x){
		write(x);
		enter;
	}
	il void writesp(ll x){
		write(x);
		space;
	}
}
using namespace my_std;
#define mod 1000000007
vector<pair<ll,ll> > ans[11];
vector<ll> vec1[220],vec2[220];
ll q,n=2,a[11],f[220],ff[220],b[220],cntb,c[220],cntc,d[220];
void dfs1(ll now,ll sum,ll mul){
	vec1[sum].push_back(mul);
	fr(i,now,min(5ll,n-2-sum)) dfs1(i,sum+i,mul*f[i]%mod);
}
void dfs2(ll now,ll sum,ll mul){
	vec2[sum].push_back(mul);
	fr(i,now,n-2-sum) dfs2(i,sum+i,mul*ff[i]%mod);
}
bl dfs3(ll now,ll sum,ll mul,ll nsum,ll nmul){
	if(nsum==sum&&nmul==mul) return 1;
	if(sum>=nsum) return 0;
	fr(i,now,min(5ll,n-2-sum)){
		b[++cntb]=i;
		if(dfs3(i,sum+i,mul*f[i]%mod,nsum,nmul)) return 1;
		cntb--;
	}
	return 0;
}
bl dfs4(ll now,ll sum,ll mul,ll nsum,ll nmul){
	if(nsum==sum&&nmul==mul) return 1;
	if(sum>=nsum) return 0;
	fr(i,now,n-2-sum){
		c[++cntc]=i;
		if(dfs4(i,sum+i,mul*ff[i]%mod,nsum,nmul)) return 1;
		cntc--;
	}
	return 0;
}
il void solve(){
	pf("%lld start\n",n);
	ll tmp=1;
	fr(i,0,n-2){
		f[i]=tmp;
		tmp=tmp*(n-2-i)%mod;
	}
	fr(i,0,n-2) ff[i]=inv(f[i],mod);
	dfs1(1,0,1);
	dfs2(6,0,1);
	fr(i,0,n-2) sort(vec2[i].begin(),vec2[i].end());
	fr(i,1,q){
		if(!ans[i].empty()) continue;
		tmp=n*(n-1)%mod*inv(a[i],mod)%mod;
		fr(j,0,n-2){
			ll res1=-1,res2=-1;
			fr(k,0,(ll)vec1[j].size()-1){
				ll now=vec1[j][k]*tmp%mod,pos=lower_bound(vec2[n-2-j].begin(),vec2[n-2-j].end(),now)-vec2[n-2-j].begin();
				if(pos<(ll)vec2[n-2-j].size()&&vec2[n-2-j][pos]==now){
					res1=vec1[j][k];
					res2=now;
					break;
				}
			}
			if(res1==-1) continue;
			pf("query #%lld done\n",i);
			cntb=cntc=0;
			dfs3(1,0,1,j,res1);
			dfs4(6,0,1,n-2-j,res2);
			fr(k,1,n) d[k]=0;
			fr(k,1,cntb) d[k]=b[k];
			fr(k,1,cntc) d[cntb+k]=c[k];
			ll now=1;
			fr(k,1,n){
				while(d[k]--) ans[i].push_back(MP(k,++now));
				if(k==1) ans[i].push_back(MP(k,++now));
			}
			break;
		}
	}
	fr(i,0,n-2) vec1[i].clear();
	fr(i,0,n-2) vec2[i].clear();
	pf("%lld end\n",n);
}
int main(){
	q=read();
	fr(i,1,q){
		a[i]=read();
		if(a[i]==1) ans[i].push_back(MP(0,0));
	}
	while(1){
		bl ck=0;
		fr(i,1,q) if(ans[i].empty()) ck=1;
		if(!ck) break;
		solve();
		n++;
	}
	fr(i,1,q){
		if(!ans[i][0].fir) writeln(1);
		else{
			writeln((ll)ans[i].size()+1);
			fr(j,0,(ll)ans[i].size()-1) pf("%lld %lld\n",ans[i][j].fir,ans[i][j].sec);
		}
	}
}