Unscramble RIHTFS

firths friths shrift

first firth frist frith frits hirst rifts shift shirt

firs fish fist fits fris frit hirs hist hits isth rifs rift rish rist rits shir shit shri sift sirt sith stir thir this tshi

fir fit frs frt fth hir his hit hrs hts ifs ihs irs ish ist its rfs rif ris rit rti shi shr sht sif sir sit sri str tfr tis trf tri trs tsi

fi fr fs ft hf hi hr hs ht if ir is it rf rh rs rt sf sh si sr st th ti tr ts