C31232233133313221211113313331311331333133313331323131133222321   >>    C3123223313331322121111331333131133133313331333132313113322232   <<    C31232233133313221211113313331311331333133313331323131133222323   >>      C31232233133313221211113313331311331333133313331323131133222322   >>