C1111233131211111211113313331333133313232313331333133313331311222311111   >>    C111123313121111121111331333133313331323231333133313331333131122231111   <<    C1111233131211111211113313331333133313232313331333133313331311222311113   >>      C1111233131211111211113313331333133313232313331333133313331311222311112   >>