-er a-a a-b a-i aaa aab aae aai aam aan aao aar aau ab- aba abb abe abi abm abn abo abr abu aea aeb aee aei aem aen aeo aer aeu ai- aia aib aie aii aim ain aio air aiu ama amb ame ami amm amn amo amr amu an- ana anb ane ani anm ann ano anr anu aoa aob aoe aoi aom aon aoo aor aou ar- ara arb are ari arm arn aro arr aru au- aua aub aue aui aum aun auo aur b-u baa bab bae bai bam ban bao bar bau bba bbb bbe bbi bbm bbn bbo bbr bbu be- bea beb bee bei bem ben beo ber beu bi- bia bib bie bii bim bin bio bir biu bma bmb bme bmi bmm bmn bmo bmr bmu bna bnb bne bni bnn bno bnr bnu boa bob boe boi bom bon boo bor bou bra brb bre bri brm brn bro brr bru bua bub bue bui bum bun buo bur buu eaa eab eae eai eam ean eao ear eau eba ebb ebe ebi ebm ebn ebo ebr ebu eea eeb eee eem een eeo eer eia eib eie eii eim ein eio eir eiu em- ema emb eme emi emm emn emo emr emu en- ena enb ene eni enm enn eno enr enu eo- eoa eob eoe eoi eom eon eoo eor eou era erb ere eri erm ern ero err eru eu- eua eub eue eui eun eur ia- iaa iab iae iai iam ian iao iar iau iba ibb ibe ibi ibm ibn ibo ibr ibu ie- iea iee iei iem ien ier iia iib iie iii iim iin iio iir iiu im- ima imb ime imi imm imn imo imu in- ina inb ine ini inm inn ino inr inu io- ioa iob ioe ioi iom ion ioo ior iou ir- ira irb ire iri irm irn iro irr iru iu- iua iub iue iui ium iur m-o m-r maa mab mae mai mam man mao mar mau mba mbb mbe mbi mbm mbo mbr mbu mea meb mee mei mem men meo mer meu mi- mia mib mie mii mim min mio mir miu mma mmb mme mmi mmm mmn mmo mmr mmu mna mnb mne mni mnm mnn mno mnr mnu moa mob moe moi mom mon moo mor mou mra mrb mre mri mrm mrn mro mrr mru mua mub mue mui mum mun mur muu n-i naa nab nae nai nam nan nao nar nau nba nbb nbe nbi nbm nbn nbo nbr nbu ne- nea neb nee nei nem nen neo ner neu nia nib nie nii nim nin nio nir niu nma nmb nme nmi nmm nmn nmo nmr nmu nna nnb nne nni nnm nnn nno nnu no- noa nob noe noi nom non noo nor nou nra nrb nre nri nrm nrn nro nrr nru nua nub nue nui num nun nuo nur nuu o-i oaa oab oae oai oam oan oao oar oau ob- oba obb obe obi obm obn obo obr obu oea oeb oee oei oem oen oeo oer oia oib oie oii oim oin oio oir oiu om- oma omb ome omi omm omn omo omr omu on- ona onb one oni onn ono onr onu oo- ooa oob ooi oom oon ooo oor or- ora orb ore ori orm orn oro orr oru ou- oua oue oui oum oun ouo our ra- raa rab rae rai ram ran rao rar rau rba rbb rbe rbi rbm rbn rbo rbr rbu re- rea reb ree rei rem ren reo rer reu ria rib rie rii rim rin rio rir rma rmb rme rmi rmm rmn rmo rmr rna rnb rni rnm rnn rno rnr rnu roa rob roe roi rom ron roo ror rou rra rrb rri rrm rrn rrr rru rua rub rue rui rum run ruo rur ruu ua- uaa uab uae uai uam uan uao uar uau uba ubb ube ubi ubn ubo ubr ubu uea ueb uee uei uem uen uer uia uib uie uii uim uin uio uir uiu um- uma umb ume umi umm umn umo umr umu un- una unb une uni unm unn uno unr unu uoa uob uoe uom uon uoo uor ur- ura urb ure uri urm urn uro urr uru uua uue uum uun uur uuu