Uva 11586

#include<bits/stdc++.h>

using namespace std;

int main() {
    int n;
    scanf("%d%*c", &n);
    while(n--) {
        int f=0, m=0;
        char ch;
        while(1) {
            scanf("%c", &ch);
            if(ch=='\n') break;
            else if(ch=='M') m++;
            else if(ch=='F') f++;
        }
        if(f==m && m==1) printf("NO LOOP\n");
        else if(f==m) printf("LOOP\n");
        else printf("NO LOOP\n");
    }
    return 0;
}