C1111233131211111211113313331333131133132321233133313221311211312231   >>    C111123313121111121111331333133313113313232123313331322131121131223   <<    C1111233131211111211113313331333131133132321233133313221311211312233   >>      C1111233131211111211113313331333131133132321233133313221311211312232   >>