-er -ey a-a a-b aaa aab aae aaf aan aar aay ab- aba abb abe abf abn abr aby aea aeb aee aef aen aer aey af- afa afb afe aff afn afr afy an- ana anb ane anf ann anr any ar- ara arb are arf arn arr ary ay- aya aye ayf ayn ayr baa bab bae baf ban bar bay bba bbb bbe bbf bbn bbr bby be- bea beb bee bef ben ber bey bfa bfb bfe bff bfn bfr bfy bna bnb bne bnf bnn bnr bra brb bre brf brn brr bry by- bya bye byf byn byr eaa eab eae eaf ean ear eba ebb ebe ebf ebn ebr eby eea eeb eee eef een eer eey ef- efa efb efe eff efr en- ena enb ene enf enn enr eny era erb ere erf ern err ery eya eye eyn eyr faa fab fae faf fan far fay fba fbb fbe fbf fbn fbr fea feb fee fef fen fer fey ffa ffe fff ffn ffr ffy fna fnb fne fnf fnn fnr fra frb fre frf frn frr fry fy- fya fyb fye fyn naa nab nae naf nan nar nay nba nbb nbe nbf nbn nbr ne- nea neb nee nef nen ner ney nfa nfb nfe nff nfn nfr nna nnb nne nnf nnn nra nrb nre nrf nrn nrr nry nya nye nyf nyn nyy ra- raa rab rae raf ran rar ray rba rbb rbe rbf rbn rbr re- rea reb ree ref ren rer rey rfa rfb rfe rff rfn rfr rna rnb rnn rnr rny rra rrb rrf rrn rrr ry- rya rye ryf ryn ryr ryy yaa yab yae yaf yan yar yay ybe ybf ybr yby yea yeb yee yef yen yer yey yfa yfe yff yfr yna yne ynn yny yra yre yrf yrn yyb yye yyf yyy