B3311331313231311331322331333132313331322121133133313331323223313221211   >>    B331133131323131133132233133313231333132212113313331333132322331322121   <<    B3311331313231311331322331333132313331322121133133313331323223313221213   >>      B3311331313231311331322331333132313331322121133133313331323223313221212   >>