C312322331333132212111133133313331333131133113313331333231311331333132322321   >>    C31232233133313221211113313331333133313113311331333133323131133133313232232   <<    C312322331333132212111133133313331333131133113313331333231311331333132322323   >>      C312322331333132212111133133313331333131133113313331333231311331333132322322   >>