C32133223331333131133132212111133133313331333131211211233212121   >>    C3213322333133313113313221211113313331333133313121121123321212   <<    C32133223331333131133132212111133133313331333131211211233212123   >>      C32133223331333131133132212111133133313331333131211211233212122   >>