-ey a-a a-c aaa aac aae aak aan aao aay ac- aca acc ace ack acn aco acy aea aec aee aek aen aeo aey aka akc ake akk akn ako an- ana anc ane ank ann ano any aoa aoc aoe aok aon aoo ay- aya ayc aye ayk ayn ayo c-- caa cac cae cak can cao cay cca ccc cce cck ccn cco ce- cea cec cee cek cen ceo cey cka ckc cko cky cn- cna cnc cne cnn cno cny co- coa coc coe cok con coo coy cya cyc cye cyk cyn cyo eaa eac eae eak ean eao ec- eca ecc ece eck ecn eco eea eec eee eek een eeo eey eka ekc eke eko eky en- ena enc ene enk enn eno eny eo- eoa eoc eoe eok eon eoo eya eyc eye eyn eyo ka- kaa kac kae kak kan kao kay kca kcc kce kck kcn ke- kea kec kee kek ken keo key kkc kke kkk kkn kky kn- kna knc kne knk knn kno koa koc koe kok kon koo koy kya kyc kye kyn kyo naa nac nae nak nan nao nay nca ncc nce nck ncn nco ne- nea nec nee nek nen neo ney nka nkc nke nkk nkn nko nky nna nnc nne nnk nnn nno no- noa noc noe nok non noo noy nya nyc nye nyk nyn nyo nyy oaa oac oae oak oan oao oc- oca occ ock ocn oco oea oec oee oen oeo oey oka okc oke okk oko on- ona onc one onk onn ono ony oo- ooa ooc ook oon ooo oya oye oyo yaa yac yae yak yan yao yay yca ycc yce yco ycy yea yec yee yek yen yeo yey yka ykk ykn yna yne ynk ynn yny yoc yoe yok yon yoo yoy yyc yye yyy