C1111233131211111211113313331333133313331333133313331333133313221211211111   >>    C111123313121111121111331333133313331333133313331333133313331322121121111   <<    C1111233131211111211113313331333133313331333133313331333133313221211211113   >>      C1111233131211111211113313331333133313331333133313331333133313221211211112   >>