B3311331313231311331322331333131133132323131133132313331322331323221322321   >>    B331133131323131133132233133313113313232313113313231333132233132322132232   <<    B3311331313231311331322331333131133132323131133132313331322331323221322323   >>      B3311331313231311331322331333131133132323131133132313331322331323221322322   >>