#include<bits/stdc++.h>
 
using namespace std;
 
int main()
{
    int n, m, f;
    scanf("%d",&n);
    getchar();
    while(n--)
    {
        string s;
        getline(cin,s);
        int m = f = 0;
        int len = s.size();
        for(int i=0; i<len; i++)
        {
            if(s[i]=='M')
                m++;
            else if(s[i]=='F')
                f++;
        }
        if(f==m && len>2)
            printf("LOOP\n");
        else
            printf("NO LOOP\n");
    }
    return 0;
}
 

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