-er -ey a-a a-b a-i aaa aab aae aai aan aao aar aas aay ab- aba abb abe abi abn abo abr abs aby aea aeb aee aei aen aeo aer aes aey ai- aia aib aie aii ain aio air ais aiy an- ana anb ane ani ann ano anr ans any aoa aob aoe aoi aon aoo aor aos ar- ara arb are ari arn aro arr ars ary as- asa asb ase asi asn aso asr ass asy ay- aya aye ayi ayn ayo ayr ays baa bab bae bai ban bao bar bas bay bba bbb bbe bbi bbn bbo bbr bbs bby be- bea beb bee bei ben beo ber bes bey bi- bia bib bie bii bin bio bir bis biy bna bnb bne bni bnn bno bnr bns boa bob boe boi bon boo bor bos boy bra brb bre bri brn bro brr brs bry bsa bsb bse bsi bsn bso bsr bss bsy by- bya bye byi byn byo byr bys eaa eab eae eai ean eao ear eas eba ebb ebe ebi ebn ebo ebr ebs eby eea eeb eee een eeo eer ees eey eia eib eie eii ein eio eir eis en- ena enb ene eni enn eno enr ens eny eo- eoa eob eoe eoi eon eoo eor eos era erb ere eri ern ero err ers ery es- esa esb ese esi esn eso esr ess esy eya eye eyn eyo eyr eys ia- iaa iab iae iai ian iao iar ias iba ibb ibe ibi ibn ibo ibr ibs iby ie- iea iee iei ien ier ies iey iia iib iie iii iin iio iir iis in- ina inb ine ini inn ino inr ins iny io- ioa iob ioe ioi ion ioo ior ios ir- ira irb ire iri irn iro irr irs iry is- isa isb ise isi isn iso isr iss isy iya iye iyo iyr iys iyy n-i naa nab nae nai nan nao nar nas nay nba nbb nbe nbi nbn nbo nbr nbs ne- nea neb nee nei nen neo ner nes ney nia nib nie nii nin nio nir nis nna nnb nne nni nnn nno nns no- noa nob noe noi non noo nor nos noy nra nrb nre nri nrn nro nrr nrs nry nsa nsb nse nsi nsn nso nsr nss nsy nya nye nyn nyo nys nyy o-i oaa oab oae oai oan oao oar oas ob- oba obb obe obi obn obo obr obs oby oea oeb oee oei oen oeo oer oes oey oia oib oie oii oin oio oir ois on- ona onb one oni onn ono onr ons ony oo- ooa oob ooi oon ooo oor oos or- ora orb ore ori orn oro orr ors ory os- osa osb ose osi osn oso osr oss oya oye oyi oyo oys ra- raa rab rae rai ran rao rar ras ray rba rbb rbe rbi rbn rbo rbr rbs re- rea reb ree rei ren reo rer res rey ria rib rie rii rin rio rir ris riy rna rnb rni rnn rno rnr rns rny roa rob roe roi ron roo ror ros roy rra rrb rri rrn rrr rrs rsa rsb rse rsi rsn rso rsr rss ry- rya rye ryn ryo ryr rys ryy saa sab sae sai san sao sar sas say sba sbb sbe sbi sbn sbo sbr sbs sby se- sea seb see sei sen seo ser ses sey sia sib sie sii sin sio sir sis sna snb sne sni snn sno snr sns sny soa sob soe soi son soo sor sos soy sr- sra srb sre sri srn sro srr srs sry ss- ssa ssb sse ssi ssn sso ssr sss sy- sya syb sye syi syn syr sys yaa yab yae yai yan yao yar yas yay ybe ybi ybr ybs yby yea yeb yee yei yen yeo yer yes yey yie yii yin yio yir yis yna yne ynn yns yny yob yoe yoi yon yoo yor yos yoy yra yre yrn yro yrs ysa ysb yse ysi yso ysr yss ysy yyb yye yys yyy