l = list("0000000000")
while True:
    print "".join(l)
    x,state = raw_input().split(" ")
    x = int(x)
    if (state == "unlocked"):
        break

    new_l = []
    for i in range(10):
        _l = [] + l
        _l[i] = str((int(l[i]) + 1 ) % 10)
        print "".join(_l)
        y,state = raw_input().split(" ")
        y = int(y)
        if (x == y ):
            new_l.append(str((int(_l[i]) + 1 ) % 10 ))
        elif (x < y ):
            new_l.append(_l[i])
        else:
            new_l.append(l[i])
    l = new_l