C1111233131211111211113313331333133313232313331333131121211113313331322323331   >>    C111123313121111121111331333133313331323231333133313112121111331333132232333   <<    C1111233131211111211113313331333133313232313331333131121211113313331322323333   >>      C1111233131211111211113313331333133313232313331333131121211113313331322323332   >>