-er a-a a-b a-i aaa aab aae aaf aag aai aan aao aar aau ab- aba abb abe abf abg abi abn abo abr abu aea aeb aee aef aeg aei aen aeo aer aeu af- afa afb afe aff afg afi afn afo afr afu ag- aga agb age agf agg agi agn ago agr agu ai- aia aib aie aif aig aii ain aio air aiu an- ana anb ane anf ang ani ann ano anr anu aoa aob aoe aof aog aoi aon aoo aor aou ar- ara arb are arf arg ari arn aro arr aru au- aua aub aue auf aug aui aun auo aur b-u baa bab bae baf bag bai ban bao bar bau bba bbb bbe bbf bbg bbi bbn bbo bbr bbu be- bea beb bee bef beg bei ben beo ber beu bfa bfb bfe bff bfg bfi bfn bfo bfr bfu bga bgb bge bgf bgg bgi bgn bgo bgr bgu bi- bia bib bie bif big bii bin bio bir biu bna bnb bne bnf bng bni bnn bno bnr bnu boa bob boe bof bog boi bon boo bor bou bra brb bre brf brg bri brn bro brr bru bua bub bue buf bug bui bun buo bur buu eaa eab eae eaf eag eai ean eao ear eau eba ebb ebe ebf ebg ebi ebn ebo ebr ebu eea eeb eee eef eeg een eeo eer ef- efa efb efe eff efg efi efo efr ega egb ege egf egg egi egn ego egr egu eia eib eie eif eig eii ein eio eir eiu en- ena enb ene enf eng eni enn eno enr enu eo- eoa eob eoe eof eog eoi eon eoo eor eou era erb ere erf erg eri ern ero err eru eu- eua eub eue euf eug eui eun eur faa fab fae faf fag fai fan fao far fau fba fbb fbe fbf fbg fbi fbn fbo fbr fbu fea feb fee fef feg fei fen feo fer feu ffa ffe fff ffg ffi ffn ffo ffr ffu fga fgb fge fgf fgg fgi fgn fgr fia fib fie fif fig fii fin fir fiu fna fnb fne fnf fng fni fnn fnr fnu foa fob foe fof fog foi fon foo for fou fra frb fre frf frg fri frn fro frr fru fua fub fue fuf fug fui fun fuo fur fuu gaa gab gae gaf gag gai gan gao gar gau gba gbe gbf gbg gbi gbn gbo gbr gbu ge- gea geb gee gef geg gei gen geo ger geu gfa gfb gfe gff gfi gfo gfr gga ggb ggg ggi ggn ggo ggr ggu gia gib gie gif gig gii gin gio gir giu gna gnb gne gnf gni gnn gno gnr gnu goa gob goe gof gog goi gon goo gor gou gra grb gre grf grg gri grn gro grr gru gu- gua gub gue guf gug gui gun guo gur guu i-f ia- iaa iab iae iaf iag iai ian iao iar iau iba ibb ibe ibf ibg ibi ibn ibo ibr ibu ie- iea iee ief ieg iei ien ier ifa ifb ife iff ifg ifi ifn ifo ifr ifu iga igb ige igf igg igi ign igo igr igu iia iib iie iif iii iin iio iir iiu in- ina inb ine inf ing ini inn ino inr inu io- ioa iob ioe iof iog ioi ion ioo ior iou ir- ira irb ire irf irg iri irn iro irr iru iu- iua iub iue iug iui iur n-i naa nab nae naf nag nai nan nao nar nau nba nbb nbe nbf nbg nbi nbn nbo nbr nbu ne- nea neb nee nef neg nei nen neo ner neu nfa nfb nfe nff nfi nfn nfo nfr nfu nga ngb nge ngf ngg ngi ngn ngo ngu nia nib nie nif nig nii nin nio nir niu nna nnb nne nnf nng nni nnn nno nnu no- noa nob noe nof nog noi non noo nor nou nra nrb nre nrf nrg nri nrn nro nrr nru nua nub nue nug nui nun nuo nur nuu o-i oaa oab oae oaf oag oai oan oao oar oau ob- oba obb obe obf obg obi obn obo obr obu oea oeb oee oef oeg oei oen oeo oer of- ofa ofb ofe off ofg ofi ofn ofo ofr ofu oga oge ogf ogg ogi ogn ogo oia oib oie oif oii oin oio oir oiu on- ona onb one onf ong oni onn ono onr onu oo- ooa oob oof oog ooi oon ooo oor or- ora orb ore orf org ori orn oro orr oru ou- oua oue ouf oui oun ouo our ra- raa rab rae raf rag rai ran rao rar rau rba rbb rbe rbf rbg rbi rbn rbo rbr rbu re- rea reb ree ref reg rei ren reo rer reu rfa rfb rfe rff rfg rfi rfn rfo rfr rfu rga rgb rge rgf rgg rgi rgn rgo rgr ria rib rie rif rig rii rin rio rir rna rnb rng rni rnn rno rnr rnu roa rob roe rof rog roi ron roo ror rou rra rrb rrf rrg rri rrn rrr rru rua rub rue ruf rug rui run ruo rur ruu ua- uaa uab uae uaf uag uai uan uao uar uau uba ubb ube ubf ubg ubi ubn ubo ubr ubu uea ueb uee uef ueg uei uen uer ufa ufe uff ufg ufi ufn ufo ufr ufu uga ugb uge ugf ugg ugi ugn ugo ugr ugu uia uib uie uif uig uii uin uio uir uiu un- una unb une unf ung uni unn uno unr unu uoa uob uoe uog uon uoo uor ur- ura urb ure urf urg uri urn uro urr uru uua uue uug uun uur uuu