-er a-a a-b a-i a-t aaa aab aae aaf aai aan aao aar aat aau ab- aba abb abe abf abi abn abo abr abt abu aea aeb aee aef aei aen aeo aer aet aeu af- afa afb afe aff afi afn afo afr aft afu ai- aia aib aie aif aii ain aio air ait aiu an- ana anb ane anf ani ann ano anr ant anu aoa aob aoe aof aoi aon aoo aor aot aou ar- ara arb are arf ari arn aro arr art aru at- ata atb ate atf ati atn ato atr att atu au- aua aub aue auf aui aun auo aur aut b-u baa bab bae baf bai ban bao bar bat bau bba bbb bbe bbf bbi bbn bbo bbr bbt bbu be- bea beb bee bef bei ben beo ber bet beu bfa bfb bfe bff bfi bfn bfo bfr bft bfu bi- bia bib bie bif bii bin bio bir bit biu bna bnb bne bnf bni bnn bno bnr bnt bnu boa bob boe bof boi bon boo bor bot bou bra brb bre brf bri brn bro brr brt bru bta btb bte btf bti btn bto btr btt btu bua bub bue buf bui bun buo bur but buu eaa eab eae eaf eai ean eao ear eat eau eba ebb ebe ebf ebi ebn ebo ebr ebt ebu eea eeb eee eef een eeo eer eet ef- efa efb efe eff efi efo efr eft eia eib eie eif eii ein eio eir eit eiu en- ena enb ene enf eni enn eno enr ent enu eo- eoa eob eoe eof eoi eon eoo eor eot eou era erb ere erf eri ern ero err ert eru eta etb ete etf eti etn eto etr ett etu eu- eua eub eue euf eui eun eur eut faa fab fae faf fai fan fao far fat fau fba fbb fbe fbf fbi fbn fbo fbr fbt fbu fea feb fee fef fei fen feo fer fet feu ffa ffe fff ffi ffn ffo ffr fft ffu fia fib fie fif fii fin fir fit fiu fna fnb fne fnf fni fnn fnr fnt fnu foa fob foe fof foi fon foo for fot fou fra frb fre frf fri frn fro frr frt fru fta ftb fte ftf fti ftn fto ftr ftt ftu fua fub fue fuf fui fun fuo fur fut fuu i-f ia- iaa iab iae iaf iai ian iao iar iat iau iba ibb ibe ibf ibi ibn ibo ibr ibt ibu ie- iea iee ief iei ien ier iet ifa ifb ife iff ifi ifn ifo ifr ift ifu iia iib iie iif iii iin iio iir iit iiu in- ina inb ine inf ini inn ino inr int inu io- ioa iob ioe iof ioi ion ioo ior iot iou ir- ira irb ire irf iri irn iro irr irt iru ita itb ite itf iti itn ito itt itu iu- iua iub iue iui iur iut n-i naa nab nae naf nai nan nao nar nat nau nba nbb nbe nbf nbi nbn nbo nbr nbt nbu ne- nea neb nee nef nei nen neo ner net neu nfa nfb nfe nff nfi nfn nfo nfr nft nfu nia nib nie nif nii nin nio nir nit niu nna nnb nne nnf nni nnn nno nnt nnu no- noa nob noe nof noi non noo nor not nou nra nrb nre nrf nri nrn nro nrr nrt nru nta ntb nte ntf nti ntn nto ntr ntt ntu nua nub nue nui nun nuo nur nut nuu o-i oaa oab oae oaf oai oan oao oar oat oau ob- oba obb obe obf obi obn obo obr obt obu oea oeb oee oef oei oen oeo oer oet of- ofa ofb ofe off ofi ofn ofo ofr oft ofu oia oib oie oif oii oin oio oir oit oiu on- ona onb one onf oni onn ono onr ont onu oo- ooa oob oof ooi oon ooo oor oot or- ora orb ore orf ori orn oro orr ort oru ot- ota otb ote otf oti otn oto otr ott otu ou- oua oue ouf oui oun ouo our out ra- raa rab rae raf rai ran rao rar rat rau rba rbb rbe rbf rbi rbn rbo rbr rbt rbu re- rea reb ree ref rei ren reo rer ret reu rfa rfb rfe rff rfi rfn rfo rfr rft rfu ria rib rie rif rii rin rio rir rit rna rnb rni rnn rno rnr rnt rnu roa rob roe rof roi ron roo ror rot rou rra rrb rrf rri rrn rrr rrt rru rta rtb rte rtf rti rtn rto rtr rtt rtu rua rub rue ruf rui run ruo rur rut ruu taa tab tae taf tai tan tao tar tat tau tba tbb tbe tbf tbi tbn tbo tbr tbt tbu te- tea teb tee tef tei ten teo ter tet teu tfa tfb tfe tff tfi tfn tfo tfr tft tfu tia tib tie tif tii tin tio tir tit tiu tna tnb tne tnf tni tnn tno tnr tnt to- toa tob toe tof toi ton too tor tot tou tra trb tre trf tri trn tro trr trt tru tta ttb tte ttf tti ttn tto ttr ttt ttu tua tub tue tuf tui tun tuo tur tut tuu ua- uaa uab uae uaf uai uan uao uar uat uau uba ubb ube ubf ubi ubn ubo ubr ubt ubu uea ueb uee uef uei uen uer uet ufa ufe uff ufi ufn ufo ufr uft ufu uia uib uie uif uii uin uio uir uit uiu un- una unb une unf uni unn uno unr unt unu uoa uob uoe uon uoo uor uot ur- ura urb ure urf uri urn uro urr urt uru uta utb ute utf uti utn uto utr utt utu uua uue uun