segmentation: twss thurs
rank.candidate: twssthurs twsst hurs t wssthu rs twsst hur s twssth ur s tw ssthurs t wssthur s t wssthurs twss thurs tw ss thurs t wss thurs twss thur s twssthu rs twss th urs twssthur s twss thu rs twssth urs tws s thurs t ws s thurs tws sthurs