B3311331313231311331322331333132333132311211331333132322331323133313113231   >>    B331133131323131133132233133313233313231121133133313232233132313331311323   <<    B3311331313231311331322331333132333132311211331333132322331323133313113233   >>      B3311331313231311331322331333132333132311211331333132322331323133313113232   >>