a = 1

x = 0

stack = []

while a <= 29:
    i = 5 - x

    temp = i
    if i%2 == 0:
        while i > 0:
            stack.append(a)
            a += 2
            i -= 1
        while i < temp:
            print(stack.pop(), end = ' ')
            i += 1
        print()
        x += 1
    else:
        while i > 0:
            print(a, end=' ')
            i -= 1
            a += 2
        print()
        x += 1