C1111233131211111211113313331333131133132321233133313233231322321   >>    C111123313121111121111331333133313113313232123313331323323132232   <<    C1111233131211111211113313331333131133132321233133313233231322323   >>      C1111233131211111211113313331333131133132321233133313233231322322   >>