B3311331313231311331322331333132313331323223312113313331333133313133123121   >>    B331133131323131133132233133313231333132322331211331333133313331313312312   <<    B3311331313231311331322331333132313331323223312113313331333133313133123123   >>      B3311331313231311331322331333132313331323223312113313331333133313133123122   >>