B3311331313231311331322331333132313331322331323133313331313232213112321   >>    B331133131323131133132233133313231333132233132313331333131323221311232   <<    B3311331313231311331322331333132313331322331323133313331313232213112323   >>      B3311331313231311331322331333132313331322331323133313331313232213112322   >>