B3311331313231311331322331333132313132313331323223313232213331323132332322121   >>    B331133131323131133132233133313231313231333132322331323221333132313233232212   <<    B3311331313231311331322331333132313132313331323223313232213331323132332322123   >>      B3311331313231311331322331333132313132313331323223313232213331323132332322122   >>