-er a-a a-b a-i aaa aab aae aai aan aar aas aau aav ab- aba abb abe abi abn abr abs abu abv aea aeb aee aei aen aer aes aeu aev ai- aia aib aie aii ain air ais aiu aiv an- ana anb ane ani ann anr ans anu anv ar- ara arb are ari arn arr ars aru arv as- asa asb ase asi asn asr ass asu asv au- aua aub aue aui aun aur aus auv av- ava avb ave avi avn avr avs avu b-u baa bab bae bai ban bar bas bau bav bba bbb bbe bbi bbn bbr bbs bbu be- bea beb bee bei ben ber bes beu bev bi- bia bib bie bii bin bir bis biu biv bna bnb bne bni bnn bnr bns bnu bnv bra brb bre bri brn brr brs bru brv bsa bsb bse bsi bsn bsr bss bsu bsv bua bub bue bui bun bur bus buu bva bvb bve bvi bvn bvr bvs bvu bvv eaa eab eae eai ean ear eas eau eav eba ebb ebe ebi ebn ebr ebs ebu ebv eea eeb eee een eer ees eev eia eib eie eii ein eir eis eiu eiv en- ena enb ene eni enn enr ens enu env era erb ere eri ern err ers eru erv es- esa esb ese esi esn esr ess esu esv eu- eua eub eue eui eun eur eus euv eva evb eve evi evn evr evs evv i-v ia- iaa iab iae iai ian iar ias iau iav iba ibb ibe ibi ibn ibr ibs ibu ibv ie- iea iee iei ien ier ies iev iia iib iie iii iin iir iis iiu in- ina inb ine ini inn inr ins inu inv ir- ira irb ire iri irn irr irs iru irv is- isa isb ise isi isn isr iss isu isv iu- iua iub iue iui iur ius iva ivb ive ivi ivr ivs ivu ivv n-i naa nab nae nai nan nar nas nau nav nba nbb nbe nbi nbn nbr nbs nbu nbv ne- nea neb nee nei nen ner nes neu nev nia nib nie nii nin nir nis niu niv nna nnb nne nni nnn nns nnu nnv nra nrb nre nri nrn nrr nrs nru nrv nsa nsb nse nsi nsn nsr nss nsu nsv nua nub nue nui nun nur nus nuu nuv nva nvb nve nvi nvn nvu nvv ra- raa rab rae rai ran rar ras rau rav rba rbb rbe rbi rbn rbr rbs rbu re- rea reb ree rei ren rer res reu rev ria rib rie rii rin rir ris riv rna rnb rni rnn rnr rns rnu rnv rra rrb rri rrn rrr rrs rru rsa rsb rse rsi rsn rsr rss rsu rsv rua rub rue rui run rur rus ruu ruv rva rvb rve rvi rvn rvr rvs rvu rvv saa sab sae sai san sar sas sau sav sba sbb sbe sbi sbn sbr sbs sbu sbv se- sea seb see sei sen ser ses seu sev sia sib sie sii sin sir sis siu siv sna snb sne sni snn snr sns snu snv sr- sra srb sre sri srn srr srs srv ss- ssa ssb sse ssi ssn ssr sss ssu ssv sua sub sue sui sun sur sus suu suv sva svb sve svi svn svr svs svu svv ua- uaa uab uae uai uan uar uas uau uav uba ubb ube ubi ubn ubr ubs ubu ubv uea ueb uee uei uen uer ues uia uib uie uii uin uir uis uiu un- una unb une uni unn unr uns unu unv ur- ura urb ure uri urn urr urs uru usa usb use usi usn usr uss usu usv uua uue uun uur uus uuu uva uvb uve uvs uvu uvv v-a v-e vaa vab vae vai van var vas vau vav vba vbi vbr vbs vbv vea veb vee vei ven ver ves veu vi- via vib vie vii vin vir vis viu viv vn- vna vni vnr vns vnu vnv vra vrb vre vri vrn vrr vrs vru vsa vsb vse vsi vsn vsr vss vsu vsv vue vur vus vuv vva vvb vvi vvr vvs vvv