a-a a-i aaa aaf aai aao aas aay af- afa aff afi afo afs afy ai- aia aif aii aio ais aiy aoa aof aoi aoo aos as- asa asf asi aso ass asy ay- aya ayf ayi ayo ays faa faf fai fao fas fay ffa fff ffi ffo ffs ffy fia fif fii fis foa fof foi foo fos foy fsa fsf fsi fso fss fy- fya fyi fyo i-f ia- iaa iaf iai iao ias ifa iff ifi ifo ifs ify iia iif iii iio iis io- ioa iof ioi ioo ios is- isa isf isi iso iss isy iya iyo iys iyy o-i oaa oaf oai oao oas of- ofa off ofi ofo ofs oia oif oii oio ois oo- ooa oof ooi ooo oos os- osa osf osi oso oss oya oyi oyo oys saa saf sai sao sas say sfa sff sfi sfo sfs sia sif sii sio sis soa sof soi soo sos soy ss- ssa ssf ssi sso sss sy- sya syi sys yaa yaf yai yao yas yay yfa yff yfs yif yii yio yis yof yoi yoo yos yoy ysa ysi yso yss ysy yyf yys yyy