#include<bits/stdc++.h>

using namespace std;

string days[] = {"saturday", "sunday", "monday", "tuesday", "wednesday", "thursday" , "friday"};

int main(){
    int T;
    cin>>T;
    while(T--){
        string s1 , s2;
        int L , R , A , B;
        cin>>s1>>s2>>L>>R;
        for(int j = 0 ; j < 7 ; j++){
            if(days[j] == s1) A = j;
            if(days[j] == s2) B = j;
        }
        int dif = (B - A + 1 + 7)%7 , ans = -1;
        int times = 0;
        for(int weeks = 0 ; weeks < 100 ; weeks++){
            if(dif >= L && dif <= R) {
                ++times;
                ans = dif;
            }
            dif += 7;
        }
        if(times > 1) cout<<"many";
        else if(times == 0) cout<<"impossible";
        else cout<<ans;
        cout<<endl;
    }




}