#!/usr/bin/env cscript
#include <stdio.h>

int
main(int argc, char *argv[]) {
	int index = 52, column_string_needle = 0;
	char column_string[3 + 1] = {0};

	while (index != 0) {
		column_string[column_string_needle++] = index % 26;
		index /= 26;
	}

	printf("[%s]\n", column_string);
}