-er -ey a-a a-b aaa aab aae aah aan aao aar aay ab- aba abb abe abh abn abo abr aby aea aeb aee aeh aen aeo aer aey aha ahb ahe ahh ahn aho ahr ahy an- ana anb ane anh ann ano anr any aoa aob aoe aoh aon aoo aor ar- ara arb are arh arn aro arr ary ay- aya aye ayh ayn ayo ayr baa bab bae bah ban bao bar bay bba bbb bbe bbh bbn bbo bbr bby be- bea beb bee beh ben beo ber bey bha bhb bhe bhh bho bhr bna bnb bne bnn bno bnr boa bob boe boh bon boo bor boy bra brb bre brh brn bro brr bry by- bya bye byh byn byo byr eaa eab eae eah ean eao ear eba ebb ebe ebh ebn ebo ebr eby eea eeb eee een eeo eer eey eha ehb ehe ehh ehn eho ehr en- ena enb ene enh enn eno enr eny eo- eoa eob eoe eoh eon eoo eor era erb ere erh ern ero err ery eya eye eyn eyo eyr haa hab hae hah han hao har hay hba hbb hbe hbh hbn hbo hbr hby he- hea heb hee heh hen heo her hey hha hhb hhe hhh hhn hho hhr hhy hna hnb hne hnh hnn hno hny hoa hob hoe hoh hon hoo hor hoy hr- hra hrb hre hrh hrn hro hrr hy- hya hyb hye hyh hyn hyo hyr hyy naa nab nae nah nan nao nar nay nba nbb nbe nbn nbo nbr ne- nea neb nee neh nen neo ner ney nha nhb nhe nhh nhn nhr nhy nna nnb nne nnh nnn nno no- noa nob noe noh non noo nor noy nra nrb nre nrn nro nrr nry nya nye nyn nyo nyy oaa oab oae oah oan oao oar ob- oba obb obe obh obn obo obr oby oea oeb oee oeh oen oeo oer oey oha ohe ohh ohn oho ohr on- ona onb one onh onn ono onr ony oo- ooa oob ooh oon ooo oor or- ora orb ore orh orn oro orr ory oya oye oyo ra- raa rab rae rah ran rao rar ray rba rbb rbe rbh rbn rbo rbr re- rea reb ree reh ren reo rer rey rh- rha rhb rhe rhh rhn rho rhr rna rnb rnh rnn rno rnr rny roa rob roe roh ron roo ror roy rra rrb rrh rrn rrr ry- rya rye ryn ryo ryr ryy yaa yab yae yah yan yao yar yay ybe ybr yby yea yeb yee yeh yen yeo yer yey yha yhe yna yne ynn yny yob yoe yon yoo yor yoy yra yre yrn yro yyb yye yyy