B3311331313231311331322331333132333133311211331333132313331323223311211312131   >>    B331133131323131133132233133313233313331121133133313231333132322331121131213   <<    B3311331313231311331322331333132333133311211331333132313331323223311211312133   >>      B3311331313231311331322331333132333133311211331333132313331323223311211312132   >>