C1111121111331311211331333133313331333133313121111121111331333131323221221   >>    C111112111133131121133133313331333133313331312111112111133133313132322122   <<    C1111121111331311211331333133313331333133313121111121111331333131323221223   >>      C1111121111331311211331333133313331333133313121111121111331333131323221222   >>