-er a-a a-b a-t aaa aab aae aaf aam aan aao aar aat aau ab- aba abb abe abf abm abn abo abr abt abu aea aeb aee aef aem aen aeo aer aet aeu af- afa afb afe aff afm afn afo afr aft afu ama amb ame amf amm amn amo amr amt amu an- ana anb ane anf anm ann ano anr ant anu aoa aob aoe aof aom aon aoo aor aot aou ar- ara arb are arf arm arn aro arr art aru at- ata atb ate atf atm atn ato atr att atu au- aua aub aue auf aum aun auo aur aut b-u baa bab bae baf bam ban bao bar bat bau bba bbb bbe bbf bbm bbn bbo bbr bbt bbu be- bea beb bee bef bem ben beo ber bet beu bfa bfb bfe bff bfm bfn bfo bfr bft bfu bma bmb bme bmf bmm bmn bmo bmr bmt bmu bna bnb bne bnf bnn bno bnr bnt bnu boa bob boe bof bom bon boo bor bot bou bra brb bre brf brm brn bro brr brt bru bta btb bte btf btm btn bto btr btt btu bua bub bue buf bum bun buo bur but buu eaa eab eae eaf eam ean eao ear eat eau eba ebb ebe ebf ebm ebn ebo ebr ebt ebu eea eeb eee eef eem een eeo eer eet ef- efa efb efe eff efm efo efr eft em- ema emb eme emf emm emn emo emr emt emu en- ena enb ene enf enm enn eno enr ent enu eo- eoa eob eoe eof eom eon eoo eor eot eou era erb ere erf erm ern ero err ert eru eta etb ete etf etm etn eto etr ett etu eu- eua eub eue euf eun eur eut faa fab fae faf fam fan fao far fat fau fba fbb fbe fbf fbm fbn fbo fbr fbt fbu fea feb fee fef fem fen feo fer fet feu ffa ffe fff ffm ffn ffo ffr fft ffu fma fmb fme fmf fmm fmn fmo fmr fmt fmu fna fnb fne fnf fnm fnn fnr fnt fnu foa fob foe fof fom fon foo for fot fou fra frb fre frf frm frn fro frr frt fru fta ftb fte ftf ftm ftn fto ftr ftt ftu fua fub fue fuf fum fun fuo fur fut fuu m-f m-o m-r maa mab mae maf mam man mao mar mat mau mba mbb mbe mbf mbm mbo mbr mbt mbu mea meb mee mef mem men meo mer met meu mfa mfb mfe mff mfm mfn mfo mfr mft mfu mma mmb mme mmf mmm mmn mmo mmr mmt mmu mna mnb mne mnf mnm mnn mno mnr mnt mnu moa mob moe mof mom mon moo mor mot mou mra mrb mre mrf mrm mrn mro mrr mrt mru mta mtb mte mtf mtm mtn mto mtr mtt mtu mua mub mue muf mum mun mur mut muu naa nab nae naf nam nan nao nar nat nau nba nbb nbe nbf nbm nbn nbo nbr nbt nbu ne- nea neb nee nef nem nen neo ner net neu nfa nfb nfe nff nfn nfo nfr nft nfu nma nmb nme nmm nmn nmo nmr nmt nmu nna nnb nne nnf nnm nnn nno nnt nnu no- noa nob noe nof nom non noo nor not nou nra nrb nre nrf nrm nrn nro nrr nrt nru nta ntb nte ntf ntm ntn nto ntr ntt ntu nua nub nue num nun nuo nur nut nuu oaa oab oae oaf oam oan oao oar oat oau ob- oba obb obe obf obm obn obo obr obt obu oea oeb oee oef oem oen oeo oer oet of- ofa ofb ofe off ofm ofn ofo ofr oft ofu om- oma omb ome omf omm omn omo omr omt omu on- ona onb one onf onn ono onr ont onu oo- ooa oob oof oom oon ooo oor oot or- ora orb ore orf orm orn oro orr ort oru ot- ota otb ote otf otm otn oto otr ott otu ou- oua oue ouf oum oun ouo our out ra- raa rab rae raf ram ran rao rar rat rau rba rbb rbe rbf rbm rbn rbo rbr rbt rbu re- rea reb ree ref rem ren reo rer ret reu rfa rfb rfe rff rfm rfn rfo rfr rft rfu rma rmb rme rmf rmm rmn rmo rmr rmt rna rnb rnm rnn rno rnr rnt rnu roa rob roe rof rom ron roo ror rot rou rra rrb rrf rrm rrn rrr rrt rru rta rtb rte rtf rtm rtn rto rtr rtt rtu rua rub rue ruf rum run ruo rur rut ruu taa tab tae taf tam tan tao tar tat tau tba tbb tbe tbf tbm tbn tbo tbr tbt tbu te- tea teb tee tef tem ten teo ter tet teu tfa tfb tfe tff tfm tfn tfo tfr tft tfu tma tmb tme tmf tmm tmn tmo tmr tmt tmu tna tnb tne tnf tnm tnn tno tnr tnt to- toa tob toe tof tom ton too tor tot tou tra trb tre trf trm trn tro trr trt tru tta ttb tte ttf ttm ttn tto ttr ttt ttu tua tub tue tuf tum tun tuo tur tut tuu ua- uaa uab uae uaf uam uan uao uar uat uau uba ubb ube ubf ubn ubo ubr ubt ubu uea ueb uee uef uem uen uer uet ufa ufe uff ufm ufn ufo ufr uft ufu um- uma umb ume umf umm umn umo umr umt umu un- una unb une unf unm unn uno unr unt unu uoa uob uoe uom uon uoo uor uot ur- ura urb ure urf urm urn uro urr urt uru uta utb ute utf utm utn uto utr utt utu uua uue uum uun uur uut