-er -ey a-a a-b a-c aaa aab aac aae aak aan aar aau aay ab- aba abb abc abe abk abn abr abu aby ac- aca acb acc ace ack acn acr acu acy aea aeb aec aee aek aen aer aeu aey aka akb akc ake akk akn akr aku an- ana anb anc ane ank ann anr anu any ar- ara arb arc are ark arn arr aru ary au- aua aub auc aue auk aun aur ay- aya ayc aye ayk ayn ayr ayu b-u baa bab bac bae bak ban bar bau bay bba bbb bbc bbe bbk bbn bbr bbu bby bca bcb bcc bce bck bcn bcr bcu bcy be- bea beb bec bee bek ben ber beu bey bka bkb bkc bke bkk bkn bkr bna bnb bnc bne bnk bnn bnr bnu bra brb bre brk brn brr bru bry bua bub buc bue buk bun bur buu buy by- bya byc bye byk byn byr byu c-- caa cab cac cae cak can car cau cay cba cbb cbc cbe cbk cbn cbr cbu cby cca ccb ccc cce cck ccn ccr ccu ce- cea ceb cec cee cek cen cer ceu cey cka ckb ckc cky cn- cna cnb cnc cne cnn cnr cnu cny cra crb crc cre crk crn crr cru cry cua cub cuc cue cuk cun cur cuu cuy cya cyb cyc cye cyk cyn cyr eaa eab eac eae eak ean ear eau eba ebb ebc ebe ebk ebn ebr ebu eby ec- eca ecb ecc ece eck ecn ecr ecu eea eeb eec eee eek een eer eey eka ekb ekc eke ekr eku eky en- ena enb enc ene enk enn enr enu eny era erb erc ere erk ern err eru ery eu- eua eub euc eue eun eur eya eyc eye eyn eyr ka- kaa kab kac kae kak kan kar kau kay kba kbb kbc kbe kbk kbn kbr kbu kca kcb kcc kce kck kcn kcr kcu ke- kea keb kec kee kek ken ker key kkb kkc kke kkk kkn kkr kku kky kn- kna knc kne knk knn knr knu kra krc krk krn krr kru kry kub kuc kue kuk kun kur kuu kuy kya kyc kye kyn kyr kyu naa nab nac nae nak nan nar nau nay nba nbb nbc nbe nbk nbn nbr nbu nca ncb ncc nce nck ncn ncr ncu ne- nea neb nec nee nek nen ner neu ney nka nkc nke nkk nkn nkr nku nky nna nnb nnc nne nnk nnn nnu nra nrb nrc nre nrk nrn nrr nru nry nua nub nuc nue nuk nun nur nuu nuy nya nyc nye nyk nyn nyu nyy ra- raa rab rac rae rak ran rar rau ray rba rbb rbc rbe rbk rbn rbr rbu rca rcb rcc rce rcn rcr rcu re- rea reb rec ree rek ren rer reu rey rkb rkc rke rkk rku rky rna rnb rnc rnn rnr rnu rny rra rrb rrc rrk rrn rrr rru rua rub ruc rue ruk run rur ruu ruy ry- rya ryc rye ryk ryn ryr ryu ryy ua- uaa uab uac uae uak uan uar uau uay uba ubb ubc ube ubk ubn ubr ubu uby uca ucb ucc uce uck ucn ucr ucu uea ueb uec uee uen uer uey uka ukb ukc uke ukk ukn ukr uku un- una unb unc une unk unn unr unu uny ur- ura urb urc ure urk urn urr uru ury uua uuc uue uun uur uuu uyc uyu yaa yab yac yae yak yan yar yau yay ybc ybe ybr yby yca ycc yce ycu ycy yea yeb yec yee yek yen yer yey yka ykk ykn yna yne ynk ynn ynu yny yra yrc yre yrn yru yua yue yuk yun yur yuu yuy yyb yyc yye yyu yyy