a-a a-t aaa aak aas aat aay aka akk aks as- asa ask ass ast asy at- ata ats att ay- aya ayk ays ayt k-t ka- kaa kak kas kat kay kkk kks kkt kky ksa ksk kss kst kta ktk kts ktt kya kys kyt saa sak sas sat say sk- ska skk sks skt sky ss- ssa ssk sss sst sta stk sts stt sty sy- sya syk sys syt taa tak tas tat tay tka tkk tks tkt tky tsa tsk tss tst tsy tta ttk tts ttt tty tya tys tyt yaa yak yas yat yay yka ykk ysa ysk yss yst ysy yta ytk yts ytt yys yyt yyy