题解 | #查找兄弟单词#

while True:
    try:
        data = input().split()
        num = int(data[0])
        data.pop(0)

        check_word = data[-2]
        data.pop(-2)
        bro_word_print_index = int(data[-1])
        data.pop(-1)

        bro_num = 0
        bro_word = []

        for word in data:
            if check_word == word:
                continue
            elif sorted(word) == sorted(check_word):
                bro_num +=1
                bro_word.append(word)
        print(bro_num)
        bro_word.sort()
        print(bro_word[bro_word_print_index-1])
    except:
        break