B3311331313231311331322331333132313331322121133133313331323223313231123331   >>    B331133131323131133132233133313231333132212113313331333132322331323112333   <<    B3311331313231311331322331333132313331322121133133313331323223313231123333   >>      B3311331313231311331322331333132313331322121133133313331323223313231123332   >>