-er a-a a-b aaa aab aad aae aak aam aan aao aar aau ab- aba abb abd abe abk abm abn abo abr abu ad- ada adb add ade adk adm adn ado adr adu aea aeb aed aee aek aem aen aeo aer aeu aka akb akd ake akk akm akn ako akr aku ama amb amd ame amk amm amn amo amr amu an- ana anb and ane ank anm ann ano anr anu aoa aob aod aoe aok aom aon aoo aor aou ar- ara arb ard are ark arm arn aro arr aru au- aua aub aud aue auk aum aun auo aur b-u baa bab bad bae bak bam ban bao bar bau bba bbb bbd bbe bbk bbm bbn bbo bbr bbu bda bdb bdd bde bdk bdm bdo bdr bdu be- bea beb bed bee bek bem ben beo ber beu bka bkb bke bkk bkm bkn bko bkr bma bmb bmd bme bmk bmm bmn bmo bmr bmu bna bnb bnd bne bnk bnn bno bnr bnu boa bob bod boe bok bom bon boo bor bou bra brb brd bre brk brm brn bro brr bru bua bub bud bue buk bum bun buo bur buu daa dab dad dae dak dam dan dao dar dau dba dbb dbd dbe dbk dbm dbn dbo dbr dbu dda ddb ddd dde ddk ddm ddn ddo ddr ddu de- dea deb ded dee dek dem den deo der deu dka dkb dke dkk dkm dko dkr dku dma dmb dmd dme dmk dmm dmn dmo dmr dmu dna dnb dnd dne dnk dnm dnn dno dnr doa dob dod doe dok dom don doo dor dou dra drb drd dre drk drm drn dro drr dru dua dub dud due duk dum dun duo dur eaa eab ead eae eak eam ean eao ear eau eba ebb ebd ebe ebk ebm ebn ebo ebr ebu ed- eda edb edd ede edk edm edn edo edr edu eea eeb eed eee eek eem een eeo eer eka ekb ekd eke eko ekr eku em- ema emb emd eme emk emm emn emo emr emu en- ena enb end ene enk enm enn eno enr enu eo- eoa eob eod eoe eok eom eon eoo eor eou era erb erd ere erk erm ern ero err eru eu- eua eub eud eue eun eur ka- kaa kab kad kae kak kam kan kao kar kau kba kbb kbd kbe kbk kbm kbn kbo kbr kbu kda kdb kde kdk kdm kdo kdr kdu ke- kea keb ked kee kek kem ken keo ker kkb kke kkk kkm kkn kkr kku kma kmb kmd kme kmk kmm kmo kmu kn- kna knd kne knk knm knn kno knr knu koa kob kod koe kok kom kon koo kor kou kra krd krk krn kro krr kru kub kud kue kuk kum kun kur kuu m-o m-r maa mab mad mae mak mam man mao mar mau mba mbb mbd mbe mbk mbm mbo mbr mbu mda mdb mdd mde mdk mdm mdn mdo mdr mdu mea meb med mee mek mem men meo mer meu mka mkb mkd mke mkk mkm mkn mko mkr mku mma mmb mmd mme mmk mmm mmn mmo mmr mmu mna mnb mne mnk mnm mnn mno mnr mnu moa mob mod moe mok mom mon moo mor mou mra mrb mrd mre mrk mrm mrn mro mrr mru mua mub mud mue muk mum mun mur muu naa nab nad nae nak nam nan nao nar nau nba nbb nbd nbe nbk nbm nbn nbo nbr nbu nda ndb ndd nde ndk ndm ndn ndo ndr ndu ne- nea neb ned nee nek nem nen neo ner neu nka nke nkk nkm nkn nko nkr nku nma nmb nmd nme nmk nmm nmn nmo nmr nmu nna nnb nne nnk nnm nnn nno nnu no- noa nob nod noe nok nom non noo nor nou nra nrb nrd nre nrk nrm nrn nro nrr nru nua nub nud nue nuk num nun nuo nur nuu oaa oab oad oae oak oam oan oao oar oau ob- oba obb obd obe obk obm obn obo obr obu oda odb odd ode odm odn odo odr odu oea oeb oed oee oem oen oeo oer oka okb okd oke okk oko okr oku om- oma omb omd ome omm omn omo omr omu on- ona onb ond one onk onn ono onr onu oo- ooa oob ood ook oom oon ooo oor or- ora orb ord ore ork orm orn oro orr oru ou- oua oud oue ouk oum oun ouo our ra- raa rab rad rae rak ram ran rao rar rau rba rbb rbd rbe rbk rbm rbn rbo rbr rbu rda rdb rdd rde rdm rdn rdo rdr rdu re- rea reb red ree rek rem ren reo rer reu rkb rke rkk rkm rko rku rma rmb rmd rme rmm rmn rmo rmr rna rnb rnd rnm rnn rno rnr rnu roa rob rod roe rok rom ron roo ror rou rra rrb rrd rrk rrm rrn rrr rru rua rub rud rue ruk rum run ruo rur ruu ua- uaa uab uad uae uak uam uan uao uar uau uba ubb ube ubk ubn ubo ubr ubu uda udb udd ude udk udm udn udo udr udu uea ueb ued uee uem uen uer uka ukb uke ukk ukn ukr uku um- uma umb umd ume umm umn umo umr umu un- una unb und une unk unm unn uno unr unu uoa uob uod uoe uok uom uon uoo uor ur- ura urb urd ure urk urm urn uro urr uru uua uue uum uun uur uuu