B3311331313231311331322331333131133132333132333133313223313231311331322221211   >>    B331133131323131133132233133313113313233313233313331322331323131133132222121   <<    B3311331313231311331322331333131133132333132333133313223313231311331322221213   >>      B3311331313231311331322331333131133132333132333133313223313231311331322221212   >>