C312322331333132212111133133313331333131133113313331333131211111212233123231   >>    C31232233133313221211113313331333133313113311331333133313121111121223312323   <<    C312322331333132212111133133313331333131133113313331333131211111212233123233   >>      C312322331333132212111133133313331333131133113313331333131211111212233123232   >>