B3311331313231311331322331333131133132333132333133313223313232323321   >>    B331133131323131133132233133313113313233313233313331322331323232332   <<    B3311331313231311331322331333131133132333132333133313223313232323323   >>      B3311331313231311331322331333131133132333132333133313223313232323322   >>