#include<bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define rep(i,a,b) for(int i=(a);i<=(b);i++)
#define per(i,a,b) for(int i=(a);i>=(b);i--)
#define eb emplace_back
#define y1 yylyylyylyyl
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<pii> vp;
typedef unsigned long long ull;
typedef __int128 lll;
 
long long read() {
    long long res=0, w=1; char c=getchar();
    while(!isdigit(c)) {if(c=='-') w=-1; c=getchar();}
    while(isdigit(c)) {res=res*10+c-48, c=getchar();}
    return res*w;
}

const int N=1e6+9;
int T,n,m,col[N],sz[N],cnt,bp[N],a[N],b[N],bx[N],by[N];
vi e[N],s[N],sx[N],sy[N],gx[N],gy[N];
char t[N];

void dfs(int u,int c,int id) {
    col[u]=c, s[id].eb(u), sz[id]++;
    for(auto v:e[u]) {
        if(col[v]!=-1) {
            if(col[u]==col[v]) bp[id]=0;
        } else dfs(v,c^1,id);
    } 
}

signed main() {
    T=read();
    while(T--) {
        n=read(), m=read();
        rep(i,1,m) {
            int u=read(), v=read();
            e[u].eb(v), e[v].eb(u);
        }
        rep(i,1,n) if(col[i]==-1) dfs(i,0,++cnt);

        rep(i,1,n) a[i]=read();
        scanf("%s",t+1);
        rep(i,1,n) b[i]=(t[i]=='B');
        rep(i,1,cnt) {
            for(auto x:s[i]) sx[i].eb(a[x]), bx[i]^=b[x];
            sort(sx[i].begin(),sx[i].end());
            if(bp[i]) {
                for(auto x:s[i]) gx[i].eb(b[x]^col[x]);
            }
        }

        rep(i,1,n) a[i]=read();
        scanf("%s",t+1);
        rep(i,1,n) b[i]=(t[i]=='B');
        rep(i,1,cnt) {
            for(auto x:s[i]) sy[i].eb(a[x]), by[i]^=b[x];
            sort(sy[i].begin(),sy[i].end());
            if(bp[i]) {
                for(auto x:s[i]) gy[i].eb(b[x]^col[x]);
            }
        }

        bool ans=1;
        rep(i,1,cnt) ans&=((sx[i]==sy[i])&(bx[i]==by[i])&(gx[i]==gy[i]));
        if(ans) puts("YES");
        else puts("NO");

        cnt=0;
        rep(i,1,n) e[i].clear(), col[i]=-1, a[i]=b[i]=0;
        rep(i,1,cnt) sz[i]=bp[i]=bx[i]=by[i]=0;
        rep(i,1,cnt) s[i].clear(), sx[i].clear(), sy[i].clear(), gx[i].clear(), gy[i].clear();
    }
    return 0;
}