B3311331313231311331322331333132313331322331323133313331212132322221   >>    B331133131323131133132233133313231333132233132313331333121213232222   <<    B3311331313231311331322331333132313331322331323133313331212132322223   >>      B3311331313231311331322331333132313331322331323133313331212132322222   >>