C11111333133313232233133313331333133313332313331211113313121133133313331221   >>    C1111133313331323223313331333133313331333231333121111331312113313331333122   <<    C11111333133313232233133313331333133313332313331211113313121133133313331223   >>      C11111333133313232233133313331333133313332313331211113313121133133313331222   >>