#include <iostream>
#include <string>
using namespace std;

int main() {

string s("ABC");
for (std::size_t i = 0; i < s.size(); ++i) {
    for (int j = 0; j < 4; ++j) {
        if (((s[i] >> (2*j)) & 3) == 3) {
            std::cout << i << " " << s[i] << " " << (int)s[i] << " " << j << "" << ((s[i] >> 2*j) & 3) << std::endl;
        }
    }
}


	return 0;
}