C1111233131211111211113313331333133313311232312111133131133133313221232233131   >>    C111123313121111121111331333133313331331123231211113313113313331322123223313   <<    C1111233131211111211113313331333133313311232312111133131133133313221232233133   >>      C1111233131211111211113313331333133313311232312111133131133133313221232233132   >>