-er a-a a-b a-i a-t aaa aab aae aai aan aao aar aas aat aau aav ab- aba abb abe abi abn abo abr abs abt abu abv aea aeb aee aei aen aeo aer aes aet aeu aev ai- aia aib aie aii ain aio air ais ait aiu aiv an- ana anb ane ani ann ano anr ans ant anu anv aoa aob aoe aoi aon aoo aor aos aot aou aov ar- ara arb are ari arn aro arr ars art aru arv as- asa asb ase asi asn aso asr ass ast asu asv at- ata atb ate ati atn ato atr ats att atu atv au- aua aub aue aui aun auo aur aus aut auv av- ava avb ave avi avn avo avr avs avt avu b-u baa bab bae bai ban bao bar bas bat bau bav bba bbb bbe bbi bbn bbo bbr bbs bbt bbu be- bea beb bee bei ben beo ber bes bet beu bev bi- bia bib bie bii bin bio bir bis bit biu biv bna bnb bne bni bnn bno bnr bns bnt bnu bnv boa bob boe boi bon boo bor bos bot bou bov bra brb bre bri brn bro brr brs brt bru brv bsa bsb bse bsi bsn bso bsr bss bst bsu bsv bta btb bte bti btn bto btr bts btt btu btv bua bub bue bui bun buo bur bus but buu bva bvb bve bvi bvn bvo bvr bvs bvt bvu bvv eaa eab eae eai ean eao ear eas eat eau eav eba ebb ebe ebi ebn ebo ebr ebs ebt ebu ebv eea eeb eee een eeo eer ees eet eev eia eib eie eii ein eio eir eis eit eiu eiv en- ena enb ene eni enn eno enr ens ent enu env eo- eoa eob eoe eoi eon eoo eor eos eot eou era erb ere eri ern ero err ers ert eru erv es- esa esb ese esi esn eso esr ess est esu esv eta etb ete eti etn eto etr ets ett etu etv eu- eua eub eue eui eun eur eus eut euv eva evb eve evi evn evo evr evs evt evv i-v ia- iaa iab iae iai ian iao iar ias iat iau iav iba ibb ibe ibi ibn ibo ibr ibs ibt ibu ibv ie- iea iee iei ien ier ies iet iev iia iib iie iii iin iio iir iis iit iiu in- ina inb ine ini inn ino inr ins int inu inv io- ioa iob ioe ioi ion ioo ior ios iot iou iov ir- ira irb ire iri irn iro irr irs irt iru irv is- isa isb ise isi isn iso isr iss ist isu isv ita itb ite iti itn ito its itt itu itv iu- iua iub iue iui iur ius iut iva ivb ive ivi ivo ivr ivs ivt ivu ivv n-i naa nab nae nai nan nao nar nas nat nau nav nba nbb nbe nbi nbn nbo nbr nbs nbt nbu nbv ne- nea neb nee nei nen neo ner nes net neu nev nia nib nie nii nin nio nir nis nit niu niv nna nnb nne nni nnn nno nns nnt nnu nnv no- noa nob noe noi non noo nor nos not nou nov nra nrb nre nri nrn nro nrr nrs nrt nru nrv nsa nsb nse nsi nsn nso nsr nss nst nsu nsv nta ntb nte nti ntn nto ntr nts ntt ntu ntv nua nub nue nui nun nuo nur nus nut nuu nuv nva nvb nve nvi nvn nvt nvu nvv o-i oaa oab oae oai oan oao oar oas oat oau oav ob- oba obb obe obi obn obo obr obs obt obu obv oea oeb oee oei oen oeo oer oes oet oia oib oie oii oin oio oir ois oit oiu oiv on- ona onb one oni onn ono onr ons ont onu oo- ooa oob ooi oon ooo oor oos oot oov or- ora orb ore ori orn oro orr ors ort oru orv os- osa osb ose osi osn oso osr oss ost osu osv ot- ota otb ote oti otn oto otr ots ott otu otv ou- oua oue oui oun ouo our ous out ov- ova ovb ove ovi ovo ovs ovv ra- raa rab rae rai ran rao rar ras rat rau rav rba rbb rbe rbi rbn rbo rbr rbs rbt rbu re- rea reb ree rei ren reo rer res ret reu rev ria rib rie rii rin rio rir ris rit riv rna rnb rni rnn rno rnr rns rnt rnu rnv roa rob roe roi ron roo ror ros rot rou rov rra rrb rri rrn rrr rrs rrt rru rsa rsb rse rsi rsn rso rsr rss rst rsu rsv rta rtb rte rti rtn rto rtr rts rtt rtu rtv rua rub rue rui run ruo rur rus rut ruu ruv rva rvb rve rvi rvn rvo rvr rvs rvt rvu rvv saa sab sae sai san sao sar sas sat sau sav sba sbb sbe sbi sbn sbo sbr sbs sbt sbu sbv se- sea seb see sei sen seo ser ses set seu sev sia sib sie sii sin sio sir sis sit siu siv sna snb sne sni snn sno snr sns snt snu snv soa sob soe soi son soo sor sos sot sou sov sr- sra srb sre sri srn sro srr srs srt srv ss- ssa ssb sse ssi ssn sso ssr sss sst ssu ssv sta stb ste sti stn sto str sts stt stu stv sua sub sue sui sun suo sur sus sut suu suv sva svb sve svi svn svo svr svs svt svu svv taa tab tae tai tan tao tar tas tat tau tav tba tbb tbe tbi tbn tbo tbr tbs tbt tbu tbv te- tea teb tee tei ten teo ter