fff ffh ffi ffs ffy fhf fhh fhi fhs fif fih fii fis fsf fsh fsi fss fy- fyi h-i hff hfh hfi hfs hfy hhf hhh hhi hhs hhy hif hih hii his hsf hsh hsi hss hsy hy- hyh hyi hys hyy i-f iff ifi ifs ify ihf ihh ihi ihs ihy iif iih iii iis is- isf ish isi iss isy iys iyy sff sfh sfi sfs sh- shf shh shi shs shy sif sih sii sis ss- ssf ssh ssi sss sy- syh syi sys yff yfs yhi yhs yif yih yii yis ysi yss ysy yyf yys yyy