C1111233131211111211113313331333131133132321233133313232213112113231   >>    C111123313121111121111331333133313113313232123313331323221311211323   <<    C1111233131211111211113313331333131133132321233133313232213112113233   >>      C1111233131211111211113313331333131133132321233133313232213112113232   >>