C1111233131211111211113313331333133313331333133313331333133313331133211221   >>    C111123313121111121111331333133313331333133313331333133313331333113321122   <<    C1111233131211111211113313331333133313331333133313331333133313331133211223   >>      C1111233131211111211113313331333133313331333133313331333133313331133211222   >>