B3311331313231311331322331333132333133311211331333132313331323221331123221   >>    B331133131323131133132233133313233313331121133133313231333132322133112322   <<    B3311331313231311331322331333132333133311211331333132313331323221331123223   >>      B3311331313231311331322331333132333133311211331333132313331323221331123222   >>