#include #include const int maxn=15; char grid[maxn][maxn]; int T,n; int main() { #ifdef local freopen("pro.in","r",stdin); #endif scanf("%d",&T); for(int kase=1;kase<=T;kase++) { scanf("%d",&n); for(int i=0;i0&&grid[i-1][j]==ch) ok=false; if(i0&&grid[i][j-1]==ch) ok=false; if(j