-er a-a a-b a-i a-t aaa aab aae aai aan aar aas aat aau aav ab- aba abb abe abi abn abr abs abt abu abv aea aeb aee aei aen aer aes aet aeu aev ai- aia aib aie aii ain air ais ait aiu aiv an- ana anb ane ani ann anr ans ant anu anv ar- ara arb are ari arn arr ars art aru arv as- asa asb ase asi asn asr ass ast asu asv at- ata atb ate ati atn atr ats att atu atv au- aua aub aue aui aun aur aus aut auv av- ava avb ave avi avn avr avs avt avu b-u baa bab bae bai ban bar bas bat bau bav bba bbb bbe bbi bbn bbr bbs bbt bbu be- bea beb bee bei ben ber bes bet beu bev bi- bia bib bie bii bin bir bis bit biu biv bna bnb bne bni bnn bnr bns bnt bnu bnv bra brb bre bri brn brr brs brt bru brv bsa bsb bse bsi bsn bsr bss bst bsu bsv bta btb bte bti btn btr bts btt btu btv bua bub bue bui bun bur bus but buu bva bvb bve bvi bvn bvr bvs bvt bvu bvv eaa eab eae eai ean ear eas eat eau eav eba ebb ebe ebi ebn ebr ebs ebt ebu ebv eea eeb eee een eer ees eet eev eia eib eie eii ein eir eis eit eiu eiv en- ena enb ene eni enn enr ens ent enu env era erb ere eri ern err ers ert eru erv es- esa esb ese esi esn esr ess est esu esv eta etb ete eti etn etr ets ett etu etv eu- eua eub eue eui eun eur eus eut euv eva evb eve evi evn evr evs evt evv i-v ia- iaa iab iae iai ian iar ias iat iau iav iba ibb ibe ibi ibn ibr ibs ibt ibu ibv ie- iea iee iei ien ier ies iet iev iia iib iie iii iin iir iis iit iiu in- ina inb ine ini inn inr ins int inu inv ir- ira irb ire iri irn irr irs irt iru irv is- isa isb ise isi isn isr iss ist isu isv ita itb ite iti itn its itt itu itv iu- iua iub iue iui iur ius iut iva ivb ive ivi ivr ivs ivt ivu ivv n-i naa nab nae nai nan nar nas nat nau nav nba nbb nbe nbi nbn nbr nbs nbt nbu nbv ne- nea neb nee nei nen ner nes net neu nev nia nib nie nii nin nir nis nit niu niv nna nnb nne nni nnn nns nnt nnu nnv nra nrb nre nri nrn nrr nrs nrt nru nrv nsa nsb nse nsi nsn nsr nss nst nsu nsv nta ntb nte nti ntn ntr nts ntt ntu ntv nua nub nue nui nun nur nus nut nuu nuv nva nvb nve nvi nvn nvt nvu nvv ra- raa rab rae rai ran rar ras rat rau rav rba rbb rbe rbi rbn rbr rbs rbt rbu re- rea reb ree rei ren rer res ret reu rev ria rib rie rii rin rir ris rit riv rna rnb rni rnn rnr rns rnt rnu rnv rra rrb rri rrn rrr rrs rrt rru rsa rsb rse rsi rsn rsr rss rst rsu rsv rta rtb rte rti rtn rtr rts rtt rtu rtv rua rub rue rui run rur rus rut ruu ruv rva rvb rve rvi rvn rvr rvs rvt rvu rvv saa sab sae sai san sar sas sat sau sav sba sbb sbe sbi sbn sbr sbs sbt sbu sbv se- sea seb see sei sen ser ses set seu sev sia sib sie sii sin sir sis sit siu siv sna snb sne sni snn snr sns snt snu snv sr- sra srb sre sri srn srr srs srt srv ss- ssa ssb sse ssi ssn ssr sss sst ssu ssv sta stb ste sti stn str sts stt stu stv sua sub sue sui sun sur sus sut suu suv sva svb sve svi svn svr svs svt svu svv taa tab tae tai tan tar tas tat tau tav tba tbb tbe tbi tbn tbr tbs tbt tbu tbv te- tea teb tee tei ten ter tes tet teu tev tia tib tie tii tin tir tis tit tiu tiv tna tnb tne tni tnn tnr tns tnt tra trb tre tri trn trr trs trt tru trv tsa tsb tse tsi tsn tsr tss tst tsu tsv tta ttb tte tti ttn ttr tts ttt ttu ttv tua tub tue tui tun tur tus tut tuu tuv tva tvb tve tvi tvn tvr tvs tvt tvu ua- uaa uab uae uai uan uar uas uat uau uav uba ubb ube ubi ubn ubr ubs ubt ubu ubv uea ueb uee uei uen uer ues uet uia uib uie uii uin uir uis uit uiu un- una unb une uni unn unr uns unt unu unv ur- ura urb ure uri urn urr urs urt uru usa usb use usi usn usr uss ust usu usv uta utb ute uti utn utr uts utt utu utv uua uue uun uur uus uut uuu uva uvb uve uvs uvu uvv v-a v-e vaa vab vae vai van var vas vat vau vav vba vbi vbr vbs vbv vea veb vee vei ven ver ves vet veu vi- via vib vie vii vin vir vis vit viu viv vn- vna vni vnr vns vnu vnv vra vrb vre vri vrn vrr vrs vrt vru vsa vsb vse vsi vsn vsr vss vst vsu vsv vta vtb vte vti vtr vts vtt vtu vtv vue vur vus vut vuv vva vvb vvi vvr vvs vvt vvv