B33113313132313113313223313331323132333132313331313331333132212121121   >>    B3311331313231311331322331333132313233313231333131333133313221212112   <<    B33113313132313113313223313331323132333132313331313331333132212121123   >>      B33113313132313113313223313331323132333132313331313331333132212121122   >>