print('一別之後二地相懸'[0]+'一別之後二地相懸'[4])
print('只道是三四月又誰知五六年'[3:5]+'只道是三四月又誰知五六年'[-3:-1])
print('七弦琴無心彈八行書無可傳'[0]+'七弦琴無心彈八行書無可傳'[6])
print('九連環從中折斷十里長亭望眼欲穿'[0]+'九連環從中折斷十里長亭望眼欲穿'[7])
print('百思想千繫念萬般無奈把郎怨'[0]+'百思想千繫念萬般無奈把郎怨'[3]+'百思想千繫念萬般無奈把郎怨'[6])
 

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