#include<iostream> using namespace std; int main(){ int x,a,b,c,C; cin>>C; for(int i=1;i<=C;i++){ cin>>a>>b>>c; for(int j=1000;j<=9999;j++){ if(j%a==0&&(j+1)%b==0&&(j+2)%c==0) cout<<j<<endl; else{ cout<<"Impossible"<<endl; } } }return 0; }