B3311331313231311331322331333132313331323131323223313231333132323213112321   >>    B331133131323131133132233133313231333132313132322331323133313232321311232   <<    B3311331313231311331322331333132313331323131323223313231333132323213112323   >>      B3311331313231311331322331333132313331323131323223313231333132323213112322   >>