#include <bits/stdc++.h>
using namespace std;
#define mp(a,b) make_pair(a,b)
#define ff first
#define setp(x) setprecision(x)<<fixed
#define ss second
#define fori(v) for(lli i=0; i<v; i++)
#define forj(v) for(lli j=0; j<v; j++)
#define fork(v) for(lli k=0; k<v; k++)
#define forl(v) for(lli l=0; l<v; l++)
#define fort(v) for(lli t=0; t<v; t++)
#define forz(v) for(lli z=0; z<v; z++)
#define lli long long int
#define MAX 100010
#define double long double
#define pb push_back
int inf = pow(10,9);
lli modulo = pow(10,9)+7;
double eps = 1e-11;
ifstream in;
ofstream out;
//#define cin in
//#define cout out
string days[] = {"saturday", "sunday", "monday", "tuesday", "wednesday", "thursday", "friday"};
int fin(string a){
	fori(7){
		if(days[i]==a)
			return i;
	}
	assert(0);
}
void deal(){
	int t;
	cin>>t;
	fork(t){
		string day1 ,day2;
		int l,r;
		cin>>day1>>day2;
		cin>>l>>r;
		assert(l<=r);
		assert(r<=10000);
		assert(l>=1);
		int num = (fin(day2) - fin(day1)+8)%7;
		int a;
		for(a = l; a<=r; a++)
			if(a%7==num)
				break;
		if(a>r)
			cout<<"impossible\n";
		else if(a+7<=r)
			cout<<"many\n";
		else
			cout<<a<<'\n';
	}
}
int main(){
//	freopen("i1.txt", "r", stdin);
//	freopen("o1.txt", "wb", stdout);
	deal();
}