B3311331313231311331322331333132313331322121133133313331323132112312321   >>    B331133131323131133132233133313231333132212113313331333132313211231232   <<    B3311331313231311331322331333132313331322121133133313331323132112312323   >>      B3311331313231311331322331333132313331322121133133313331323132112312322   >>