-ey a-a a-b aaa aab aae aak aan aas aay ab- aba abb abe abk abn abs aby aea aeb aee aek aen aes aey aka akb ake akk akn aks an- ana anb ane ank ann ans any as- asa asb ase ask asn ass asy ay- aya aye ayk ayn ays baa bab bae bak ban bas bay bba bbb bbe bbk bbn bbs bby be- bea beb bee bek ben bes bey bka bkb bke bkk bkn bks bna bnb bne bnk bnn bns bsa bsb bse bsk bsn bss bsy by- bya bye byk byn bys eaa eab eae eak ean eas eba ebb ebe ebk ebn ebs eby eea eeb eee eek een ees eey eka ekb eke eks eky en- ena enb ene enk enn ens eny es- esa esb ese esk esn ess esy eya eye eyn eys ka- kaa kab kae kak kan kas kay kba kbb kbe kbk kbn kbs ke- kea keb kee kek ken kes key kkb kke kkk kkn kks kky kn- kna kne knk knn ksa ksb kse ksk ksn kss kya kye kyn kys naa nab nae nak nan nas nay nba nbb nbe nbk nbn nbs ne- nea neb nee nek nen nes ney nka nke nkk nkn nks nky nna nnb nne nnk nnn nns nsa nsb nse nsk nsn nss nsy nya nye nyk nyn nys nyy saa sab sae sak san sas say sba sbb sbe sbk sbn sbs sby se- sea seb see sek sen ses sey sk- ska skb ske skk sks sky sna snb sne snk snn sns sny ss- ssa ssb sse ssk ssn sss sy- sya syb sye syk syn sys yaa yab yae yak yan yas yay ybe ybs yby yea yeb yee yek yen yes yey yka ykk ykn yna yne ynk ynn yns yny ysa ysb yse ysk yss ysy yyb yye yys yyy