B3311331313231311331322331333132333132211312111133133313331312111133132232221   >>    B331133131323131133132233133313233313221131211113313331333131211113313223222   <<    B3311331313231311331322331333132333132211312111133133313331312111133132232223   >>      B3311331313231311331322331333132333132211312111133133313331312111133132232222   >>