a-a a-i aaa aaf aai aak aas aay af- afa aff afi afk afs afy ai- aia aif aii aik ais aiy aka aki akk aks as- asa asf asi ask ass asy ay- aya ayf ayi ayk ays faa faf fai fak fas fay ffa fff ffi ffk ffs ffy fia fif fii fik fis fka fkf fki fkk fsa fsf fsi fsk fss fy- fya fyi fyk i-f ia- iaa iaf iai ias ifa iff ifi ifs ify iia iif iii iis ika ikf iki ikk iks is- isa isf isi isk iss isy iya iys iyy ka- kaa kaf kai kak kas kay kfa kff kfi kfs kia kif kii kik kis kki kkk kks kky ksa ksf ksi ksk kss kya kys saa saf sai sak sas say sfa sff sfi sfk sfs sia sif sii sik sis sk- ska skf ski skk sks sky ss- ssa ssf ssi ssk sss sy- sya syi syk sys yaa yaf yai yak yas yay yfa yff yfs yif yii yis yka yki ykk ysa ysi ysk yss ysy yyf yys yyy