C1111121111331311211331333133313331333133313232212111112111133133313223233231   >>    C111112111133131121133133313331333133313331323221211111211113313331322323323   <<    C1111121111331311211331333133313331333133313232212111112111133133313223233233   >>      C1111121111331311211331333133313331333133313232212111112111133133313223233232   >>