a-a a-i aaa aaf aai aas aay af- afa aff afi afs afy ai- aia aif aii ais aiy as- asa asf asi ass asy ay- aya ayf ayi ays faa faf fai fas fay ffa fff ffi ffs ffy fia fif fii fis fsa fsf fsi fss fy- fya fyi i-f ia- iaa iaf iai ias ifa iff ifi ifs ify iia iif iii iis is- isa isf isi iss isy iya iys iyy saa saf sai sas say sfa sff sfi sfs sia sif sii sis ss- ssa ssf ssi sss sy- sya syi sys yaa yaf yai yas yay yfa yff yfs yif yii yis ysa ysi yss ysy yyf yys yyy