B3311331313231311331322331333132313331322331323133313331311331211233121   >>    B331133131323131133132233133313231333132233132313331333131133121123312   <<    B3311331313231311331322331333132313331322331323133313331311331211233123   >>      B3311331313231311331322331333132313331322331323133313331311331211233122   >>