-al -er -ol a-a a-b aaa aab aae aak aal aan aao aar aau ab- aba abb abe abk abl abn abo abr abu aea aeb aee aek ael aen aeo aer aeu aka akb ake akk akl akn ako akr aku al- ala alb ale alk all aln alo alr alu an- ana anb ane ank anl ann ano anr anu aoa aob aoe aok aol aon aoo aor aou ar- ara arb are ark arl arn aro arr aru au- aua aub aue auk aul aun auo aur b-u baa bab bae bak bal ban bao bar bau bba bbb bbe bbk bbl bbn bbo bbr bbu be- bea beb bee bek bel ben beo ber beu bka bkb bke bkk bkl bkn bko bkr bla blb ble blk bll bln blo blr blu bna bnb bne bnk bnl bnn bno bnr bnu boa bob boe bok bol bon boo bor bou bra brb bre brk brl brn bro brr bru bua bub bue buk bul bun buo bur buu eaa eab eae eak eal ean eao ear eau eba ebb ebe ebk ebl ebn ebo ebr ebu eea eeb eee eek eel een eeo eer eka ekb eke ekl eko ekr eku ela elb ele elk ell eln elo elr elu en- ena enb ene enk enl enn eno enr enu eo- eoa eob eoe eok eol eon eoo eor eou era erb ere erk erl ern ero err eru eu- eua eub eue eul eun eur ka- kaa kab kae kak kal kan kao kar kau kba kbb kbe kbk kbl kbn kbo kbr kbu ke- kea keb kee kek kel ken keo ker kkb kke kkk kkl kkn kkr kku kl- kla klb klo klr klu kn- kna kne knk knl knn kno knr knu koa kob koe kok kol kon koo kor kou kra krk krl krn kro krr kru kub kue kuk kul kun kur kuu la- laa lab lae lak lal lan lao lar lau lba lbb lbe lbk lbl lbo lbr lbu lea leb lee lek lel len leo ler leu lka lkb lkl lkr lla llb lle llk lll lln llo llr llu lna lnb lne lnk lnl lnn lno lnr lnu loa lob loe lok lol lon loo lor lou lra lrb lrk lrn lro lrr lru lua lub lue luk lul lun luo lur luu naa nab nae nak nal nan nao nar nau nba nbb nbe nbk nbl nbn nbo nbr nbu ne- nea neb nee nek nel nen neo ner neu nka nke nkk nkn nko nkr nku nla nlb nle nlk nll nln nlo nlr nlu nna nnb nne nnk nnl nnn nno nnu no- noa nob noe nok nol non noo nor nou nra nrb nre nrk nrl nrn nro nrr nru nua nub nue nuk nul nun nuo nur nuu oaa oab oae oak oal oan oao oar oau ob- oba obb obe obk obl obn obo obr obu oea oeb oee oel oen oeo oer oka okb oke okk okl oko okr oku ola olb ole olk oll oln olo olu on- ona onb one onk onl onn ono onr onu oo- ooa oob ook ool oon ooo oor or- ora orb ore ork orl orn oro orr oru ou- oua oue ouk oul oun ouo our ra- raa rab rae rak ral ran rao rar rau rba rbb rbe rbk rbl rbn rbo rbr rbu re- rea reb ree rek rel ren reo rer reu rkb rke rkk rko rku rla rle rll rln rlo rlr rlu rna rnb rnn rno rnr rnu roa rob roe rok rol ron roo ror rou rra rrb rrk rrl rrn rrr rru rua rub rue ruk run ruo rur ruu ua- uaa uab uae uak ual uan uao uar uau uba ubb ube ubk ubl ubn ubo ubr ubu uea ueb uee uel uen uer uka ukb uke ukk ukl ukn ukr uku ula ulb ule ulk ull uln ulo ulr ulu un- una unb une unk unl unn uno unr unu uoa uob uoe uok uol uon uoo uor ur- ura urb ure urk url urn uro urr uru uua uue uun uur uuu