class Main {
    public static void printIndices(int i, int a, int b, int c) {
        System.out.println(i%a + ", " + (i/a)%b + ", " + (i/a/b)%c);
    }
 
    public static void main(String[] args) {
        int a[] = new int[2];
        int b[] = new int[2];
        int c[] = new int[3];
 
        int iterations = a.length * b.length * c.length;
 
        for (int i=0; i < iterations; i++){
            printIndices(i, a.length, b.length, c.length);
        }
    }
}

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