#include <iostream>
#include <fstream>
using namespace std;
struct clipa
{
    int sec,mi,ora;
};
void timp(clipa c)
{
    if(c.ora<10)
        cout<<0<<c.ora<<":";
    else cout<<c.ora<<":";
    if(c.mi<10)
        cout<<0<<c.mi<<":";
    else cout<<c.mi<<":";
    if(c.sec<10)
        cout<<0<<c.sec<<":";
    else cout<<c.sec<<":";
}
ifstream f("clipa.in");
int main()
{int n,minut,secunda,ora;
clipa x,tp;
tp.ora=tp.mi=tp.sec=0;
f>>n;
while(n)
{
    f>>x.sec>>x.mi>>x.ora;
    timp(x);
    cout<<endl;

    n--;
}
    return 0;
}