#include <stdio.h>
int main() {
int t;
scanf("%d", &t);
for(int i=0; i<t; i++) {
int n, m, cnt[100010]={}, flag=1;
scanf("%d %d", &n, &m);
for(int i=0; i<n; i++) {
int l;
scanf("%d", &l);
for(int j=0; j<l; j++) {
int a;
scanf("%d", &a);
cnt[a]++;
}
}
for(int i=1; i<=m; i++) {
if(cnt[i]<3) {
flag=0; break;
}
}
if(flag) printf("YES\n");
else printf("NO\n");
}
}
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