C111112111133131121133133313331323133313221131211113313232213111221   >>    C11111211113313112113313331333132313331322113121111331323221311122   <<    C111112111133131121133133313331323133313221131211113313232213111223   >>      C111112111133131121133133313331323133313221131211113313232213111222   >>