C1111233131211111211113313331333133313331322331333133313232313111   >>    C111123313121111121111331333133313331333132233133313331323231311   <<    C1111233131211111211113313331333133313331322331333133313232313113   >>      C1111233131211111211113313331333133313331322331333133313232313112   >>