#include <iostream>
#include <string>
using namespace std;
int main() {
const char *str = "ABCDEFG";
string letters[7];
for (int i = 0 ; i != 7 ; i++) {
letters[i] = string(&str[i], &str[i+1]);
}
for (int i = 0 ; i != 7 ; i++) {
cout << letters[i] << endl;
}
return 0;
}
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