题解 | #查找兄弟单词#

while True:
    try:
        Lists = input().split()  # 按空格拆分为列表
        InputCounts = int(Lists[0])    # 获取原列表的总数N
        #print(Lists, InputCounts)
        ListStr = Lists[1:InputCounts+1]    # 获取原列表
        #print(ListStr)
        OutputCounts = int(Lists[-1])    # 获取K值
        #print(OutputCounts)
        SearchStr = Lists[-2]        # 获取对比的字符串
        #print(SearchStr)
        ListSame = []
        for x in ListStr:
            if x != SearchStr and sorted(x) == sorted(SearchStr):
                ListSame.append(x)
        print(len(ListSame))
        SortList = sorted(ListSame)
        print(SortList[OutputCounts-1])
    except:
        break