B3311331313231311331322331333132333132311211331333132322331323131313231323221   >>    B331133131323131133132233133313233313231121133133313232233132313131323132322   <<    B3311331313231311331322331333132333132311211331333132322331323131313231323223   >>      B3311331313231311331322331333132333132311211331333132322331323131313231323222   >>