-al a-a a-b aaa aab aae aaf aak aal aan aau ab- aba abb abe abf abk abl abn abu aea aeb aee aef aek ael aen aeu af- afa afb afe aff afk afl afn afu aka akb ake akk akl akn aku al- ala alb ale alf alk all aln alu an- ana anb ane anf ank anl ann anu au- aua aub aue auf auk aul aun b-u baa bab bae baf bak bal ban bau bba bbb bbe bbf bbk bbl bbn bbu be- bea beb bee bef bek bel ben beu bfa bfb bfe bff bfl bfn bfu bka bkb bke bkf bkk bkl bkn bla blb ble blf blk bll bln blu bna bnb bne bnf bnk bnl bnn bnu bua bub bue buf buk bul bun buu eaa eab eae eaf eak eal ean eau eba ebb ebe ebf ebk ebl ebn ebu eea eeb eee eef eek eel een ef- efa efb efe eff efl eka ekb eke ekf ekl eku ela elb ele elf elk ell eln elu en- ena enb ene enf enk enl enn enu eu- eua eub eue euf eul eun faa fab fae faf fak fal fan fau fba fbb fbe fbf fbk fbl fbn fbu fea feb fee fef fek fel fen feu ffa ffe fff ffk ffl ffn ffu fka fkb fkf fkk fkl fla flb fle flf fll fln flu fna fnb fne fnf fnk fnl fnn fnu fua fub fue fuf fuk ful fun fuu ka- kaa kab kae kaf kak kal kan kau kba kbb kbe kbf kbk kbl kbn kbu ke- kea keb kee kef kek kel ken kfa kff kfu kkb kke kkk kkl kkn kku kl- kla klb klf klu kn- kna kne knf knk knl knn knu kub kue kuk kul kun kuu la- laa lab lae laf lak lal lan lau lba lbb lbe lbf lbk lbl lbu lea leb lee lef lek lel len leu lfa lfb lfe lff lfk lfl lfn lfu lka lkb lkl lla llb lle llf llk lll lln llu lna lnb lne lnk lnl lnn lnu lua lub lue luf luk lul lun luu naa nab nae naf nak nal nan nau nba nbb nbe nbf nbk nbl nbn nbu ne- nea neb nee nef nek nel nen neu nfa nfb nfe nff nfk nfl nfn nfu nka nke nkf nkk nkn nku nla nlb nle nlf nlk nll nln nlu nna nnb nne nnf nnk nnl nnn nnu nua nub nue nuk nul nun nuu ua- uaa uab uae uaf uak ual uan uau uba ubb ube ubf ubk ubl ubn ubu uea ueb uee uef uel uen ufa ufe uff ufl ufn ufu uka ukb uke ukf ukk ukl ukn uku ula ulb ule ulf ulk ull uln ulu un- una unb une unf unk unl unn unu uua uue uun uuu