segmentation: still smokefree
rank.candidate: still smoke fre e st ill smokefree stills moke free stills mok e free s til l smokefree still smoke free still smo ke free still smoke f ree s ti ll smokefree st il l smokefree still smok e free stil l smokefree still sm oke free still smoke fr ee s till smokefree still smokefree still smoke f re e stills mo ke free sti ll smokefree still sm ok e free