B3311331313231311331322331333132313233313233231333133313232113313232331221   >>    B331133131323131133132233133313231323331323323133313331323211331323233122   <<    B3311331313231311331322331333132313233313233231333133313232113313232331223   >>      B3311331313231311331322331333132313233313233231333133313232113313232331222   >>