#include <bits/stdc++.h>
using namespace std;
int main() {
char a, char1 = '*', char2 = '*', char3 = '*', c = '*';
int d = 0;
while(cin >> a){
int i = 0;
i++;
if(a == '.'){
c = ';';
}
if(a != '.'){
c = char3;
char3 = char2;
char2 = char1;
char1 = a;
cout << char1;
}
if(c == '*' || char2 == '*' || char3 == '*' || c == ';' || char2 == '*' || char3 == '*'){
continue;
}
if(char2 > '2'){
d++;
cout << " " << i << " ";
}
else if(char1 == '2'){
if(char3 > '5' || c > '5'){
d++;
cout << i << endl;
}
}
}
if(d != 0){
cout << "Bad";
}
else{
cout << "Good";
}
}
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