-ey a-a a-b aaa aab aae aak aas aav aay ab- aba abb abe abk abs abv aby aea aeb aee aek aes aev aey aka akb ake akk aks akv as- asa asb ase ask ass asv asy av- ava avb ave avk avs avy ay- aya aye ayk ays baa bab bae bak bas bav bay bba bbb bbe bbk bbs bby be- bea beb bee bek bes bev bey bka bkb bke bkk bks bkv bsa bsb bse bsk bss bsv bsy bva bvb bve bvk bvs bvv by- bya bye byk bys eaa eab eae eak eas eav eba ebb ebe ebk ebs ebv eby eea eeb eee eek ees eev eey eka ekb eke eks ekv eky es- esa esb ese esk ess esv esy eva evb eve evs evv evy eya eye eys ka- kaa kab kae kak kas kav kay kba kbb kbe kbk kbs ke- kea keb kee kek kes kev key kkb kke kkk kks kkv kky ksa ksb kse ksk kss ksv kva kvb kvk kvs kvv kya kye kys saa sab sae sak sas sav say sba sbb sbe sbk sbs sbv sby se- sea seb see sek ses sev sey sk- ska skb ske skk sks sky ss- ssa ssb sse ssk sss ssv sva svb sve svk svs svv svy sy- sya syb sye syk sys v-a v-e vaa vab vae vak vas vav vay vba vbk vbs vbv vea veb vee vek ves vey vka vkb vsa vsb vse vsk vss vsv vva vvb vvs vvv vye yaa yab yae yak yas yav yay ybe ybs yby yea yeb yee yek yes yev yey yka ykk ysa ysb yse ysk yss ysy yva yve yvy yyb yye yys yyy