ans = '.' * 10
pre = int(0)
for i in range(10):
    for j in range(10):
        ans = ans[:i] + str(j) + ans[i + 1:]
        print(ans)
        x, ret = input().split()
        if(int(x) > pre):
            pre = int(x)
            break
    if ret == 'unlocked':
        break