C1111233131211111211113313331333131133132321233133313223313133111   >>    C111123313121111121111331333133313113313232123313331322331313311   <<    C1111233131211111211113313331333131133132321233133313223313133113   >>      C1111233131211111211113313331333131133132321233133313223313133112   >>