B3311331313231311331322331333132313132313331323223313231323132313211221   >>    B331133131323131133132233133313231313231333132322331323132313231321122   <<    B3311331313231311331322331333132313132313331323223313231323132313211223   >>      B3311331313231311331322331333132313132313331323223313231323132313211222   >>