-er a-a a-b a-i a-t aaa aab aae aag aai aak aan aao aar aat aau ab- aba abb abe abg abi abk abn abo abr abt abu aea aeb aee aeg aei aek aen aeo aer aet aeu ag- aga agb age agg agi agk agn ago agr agt agu ai- aia aib aie aig aii aik ain aio air ait aiu aka akb ake akg aki akk akn ako akr aku an- ana anb ane ang ani ank ann ano anr ant anu aoa aob aoe aog aoi aok aon aoo aor aot aou ar- ara arb are arg ari ark arn aro arr art aru at- ata atb ate atg ati atn ato atr att atu au- aua aub aue aug aui auk aun auo aur aut b-u baa bab bae bag bai bak ban bao bar bat bau bba bbb bbe bbg bbi bbk bbn bbo bbr bbt bbu be- bea beb bee beg bei bek ben beo ber bet beu bga bgb bge bgg bgi bgk bgn bgo bgr bgt bgu bi- bia bib bie big bii bik bin bio bir bit biu bka bkb bke bkg bkk bkn bko bkr bkt bna bnb bne bng bni bnk bnn bno bnr bnt bnu boa bob boe bog boi bok bon boo bor bot bou bra brb bre brg bri brk brn bro brr brt bru bta btb bte btg bti btk btn bto btr btt btu bua bub bue bug bui buk bun buo bur but buu eaa eab eae eag eai eak ean eao ear eat eau eba ebb ebe ebg ebi ebk ebn ebo ebr ebt ebu eea eeb eee eeg eek een eeo eer eet ega egb ege egg egi egn ego egr egt egu eia eib eie eig eii eik ein eio eir eit eiu eka ekb eke ekg eki eko ekr ekt eku en- ena enb ene eng eni enk enn eno enr ent enu eo- eoa eob eoe eog eoi eok eon eoo eor eot eou era erb ere erg eri erk ern ero err ert eru eta etb ete etg eti etk etn eto etr ett etu eu- eua eub eue eug eui eun eur eut gaa gab gae gag gai gak gan gao gar gat gau gba gbe gbg gbi gbk gbn gbo gbr gbt gbu ge- gea geb gee geg gei gek gen geo ger get geu gga ggb ggg ggi ggn ggo ggr ggt ggu gia gib gie gig gii gik gin gio gir git giu gka gkb gkn gko gkt gna gnb gne gni gnn gno gnr gnt gnu goa gob goe gog goi gok gon goo gor got gou gra grb gre grg gri grk grn gro grr grt gru gta gtb gte gtg gti gtk gtn gto gtr gtt gtu gu- gua gub gue gug gui guk gun guo gur gut guu ia- iaa iab iae iag iai ian iao iar iat iau iba ibb ibe ibg ibi ibk ibn ibo ibr ibt ibu ie- iea iee ieg iei iek ien ier iet iga igb ige igg igi igk ign igo igr igt igu iia iib iie iii iin iio iir iit iiu ika ikb ike iki ikk iko ikr ikt iku in- ina inb ine ing ini ink inn ino inr int inu io- ioa iob ioe iog ioi ion ioo ior iot iou ir- ira irb ire irg iri irk irn iro irr irt iru ita itb ite itg iti itk itn ito itt itu iu- iua iub iue iug iui iur iut k-t ka- kaa kab kae kag kai kak kan kao kar kat kau kba kbb kbe kbi kbk kbn kbo kbr kbu ke- kea keb kee keg kei kek ken keo ker ket kga kgb kgi kgo kgu kia kib kie kig kii kik kin kio kir kit kiu kkb kke kki kkk kkn kkr kkt kku kn- kna kne kng kni knk knn kno knr knt knu koa kob koe kog koi kok kon koo kor kot kou kra krg kri krk krn kro krr krt kru kta ktb kte ktg ktk ktn kto ktr ktt ktu kub kue kug kui kuk kun kur kut kuu n-i naa nab nae nag nai nak nan nao nar nat nau nba nbb nbe nbg nbi nbk nbn nbo nbr nbt nbu ne- nea neb nee neg nei nek nen neo ner net neu nga ngb nge ngg ngi ngk ngn ngo ngt ngu nia nib nie nig nii nik nin nio nir nit niu nka nke nki nkk nkn nko nkr nkt nku nna nnb nne nng nni nnk nnn nno nnt nnu no- noa nob noe nog noi nok non noo nor not nou nra nrb nre nrg nri nrk nrn nro nrr nrt nru nta ntb nte ntg nti ntk ntn nto ntr ntt ntu nua nub nue nug nui nuk nun nuo nur nut nuu o-i oaa oab oae oag oai oak oan oao oar oat oau ob- oba obb obe obg obi obk obn obo obr obt obu oea oeb oee oeg oei oen oeo oer oet oga oge ogg ogi ogn ogo ogt oia oib oie oii oik oin oio oir oit oiu oka okb oke okg oki okk oko okr oku on- ona onb one ong oni onk onn ono onr ont onu oo- ooa oob oog ooi ook oon ooo oor oot or- ora orb ore org ori ork orn oro orr ort oru ot- ota otb ote otg oti otk otn oto otr ott otu ou- oua oue oui ouk oun ouo our out ra- raa rab rae rag rai rak ran rao rar rat rau rba rbb rbe rbg rbi rbk rbn rbo rbr rbt rbu re- rea reb ree reg rei rek ren reo rer ret reu rga rgb rge rgg rgi rgk rgn rgo rgr rgt ria rib rie rig rii rik rin rio rir rit rkb rke rkg rkk rko rkt rku rna rnb rng rni