hundreds = int(input())
decimals = int(input())
digits = int(input())

for i in range(1, hundreds+1):
    if i % 2 == 0:
        c = i
    else:
        continue


    for k in range(1, decimals+1):
        if k == 2 or k == 3 or k == 5 or k == 7:
            b = k
        else:
            continue


        for j in range(1, digits+1):
            if j % 2 == 0:
                a = j
            else:
                continue

            print(f"{c} {b} {a}")