B3311331313231311331322331333132313233313231333131133132322331311322321   >>    B331133131323131133132233133313231323331323133313113313232233131132232   <<    B3311331313231311331322331333132313233313231333131133132322331311322323   >>      B3311331313231311331322331333132313233313231333131133132322331311322322   >>