die = [input().strip() for i in range(3)]
def rotate(a):
    result = [[0]*3 for i in range(3)]
    for y, row in enumerate(a):
        for x, c in enumerate(row):
            result[3-x-1][y] = c
    return result

dice = [
    [":::", ":o:", ":::"],
    ["o::", ":::", "::o"],
    ["o::", ":o:", "::o"],
    ["o:o", ":::", "o:o"],
    ["o:o", ":o:", "o:o"],
    ["o:o", "o:o", "o:o"]
    ]

def solve():
    for r, tdie in enumerate(dice):
        rdie = tdie
        for i in range(4):
            if all(c == d for a, b in zip(rdie, die) for c, d in zip(a, b)):
                print(r + 1)
                return
            rdie = rotate(rdie)
    else:
        print("unknown")

solve()