B3311331313231311331322331333132313331322121133133313331311332211   >>    B331133131323131133132233133313231333132212113313331333131133221   <<    B3311331313231311331322331333132313331322121133133313331311332213   >>      B3311331313231311331322331333132313331322121133133313331311332212   >>