C312322331333132212111133133313331333131133113313331333131211113313112113232321   >>    C31232233133313221211113313331333133313113311331333133313121111331311211323232   <<    C312322331333132212111133133313331333131133113313331333131211113313112113232323   >>      C312322331333132212111133133313331333131133113313331333131211113313112113232322   >>