C1111233131211111211113313331333133313331333133313331333133313221211221   >>    C111123313121111121111331333133313331333133313331333133313331322121122   <<    C1111233131211111211113313331333133313331333133313331333133313221211223   >>      C1111233131211111211113313331333133313331333133313331333133313221211222   >>