-al -er a-a a-b aaa aab aae aaf aag aak aal aan aar ab- aba abb abe abf abg abk abl abn abr aea aeb aee aef aeg aek ael aen aer af- afa afb afe aff afg afk afl afn afr ag- aga agb age agf agg agk agl agn agr aka akb ake akg akk akl akn akr al- ala alb ale alf alg alk all aln alr an- ana anb ane anf ang ank anl ann anr ar- ara arb are arf arg ark arl arn arr baa bab bae baf bag bak bal ban bar bba bbb bbe bbf bbg bbk bbl bbn bbr be- bea beb bee bef beg bek bel ben ber bfa bfb bfe bff bfg bfl bfn bfr bga bgb bge bgf bgg bgk bgl bgn bgr bka bkb bke bkf bkg bkk bkl bkn bkr bla blb ble blf blg blk bll bln blr bna bnb bne bnf bng bnk bnl bnn bnr bra brb bre brf brg brk brl brn brr eaa eab eae eaf eag eak eal ean ear eba ebb ebe ebf ebg ebk ebl ebn ebr eea eeb eee eef eeg eek eel een eer ef- efa efb efe eff efg efl efr ega egb ege egf egg egl egn egr eka ekb eke ekf ekg ekl ekr ela elb ele elf elg elk ell eln elr en- ena enb ene enf eng enk enl enn enr era erb ere erf erg erk erl ern err faa fab fae faf fag fak fal fan far fba fbb fbe fbf fbg fbk fbl fbn fbr fea feb fee fef feg fek fel fen fer ffa ffe fff ffg ffk ffl ffn ffr fga fgb fge fgf fgg fgl fgn fgr fka fkb fkf fkg fkk fkl fla flb fle flf flg fll fln flr fna fnb fne fnf fng fnk fnl fnn fnr fra frb fre frf frg frk frl frn frr gaa gab gae gaf gag gak gal gan gar gba gbe gbf gbg gbk gbl gbn gbr ge- gea geb gee gef geg gek gel gen ger gfa gfb gfe gff gfk gfl gfr gga ggb ggg ggn ggr gka gkb gkn gla glb gle glf glg glk gll gln glr gna gnb gne gnf gnl gnn gnr gra grb gre grf grg grk grl grn grr ka- kaa kab kae kaf kag kak kal kan kar kba kbb kbe kbf kbk kbl kbn kbr ke- kea keb kee kef keg kek kel ken ker kfa kff kfg kga kgb kgf kgl kkb kke kkk kkl kkn kkr kl- kla klb klf klg klr kn- kna kne knf kng knk knl knn knr kra krf krg krk krl krn krr la- laa lab lae laf lag lak lal lan lar lba lbb lbe lbf lbg lbk lbl lbr lea leb lee lef leg lek lel len ler lfa lfb lfe lff lfg lfk lfl lfn lfr lga lgb lge lgf lgg lgk lgl lgn lgr lka lkb lkg lkl lkr lla llb lle llf llg llk lll lln llr lna lnb lne lng lnk lnl lnn lnr lra lrb lrf lrg lrk lrn lrr naa nab nae naf nag nak nal nan nar nba nbb nbe nbf nbg nbk nbl nbn nbr ne- nea neb nee nef neg nek nel nen ner nfa nfb nfe nff nfk nfl nfn nfr nga ngb nge ngf ngg ngk ngl ngn nka nke nkf nkk nkn nkr nla nlb nle nlf nlg nlk nll nln nlr nna nnb nne nnf nng nnk nnl nnn nra nrb nre nrf nrg nrk nrl nrn nrr ra- raa rab rae raf rag rak ral ran rar rba rbb rbe rbf rbg rbk rbl rbn rbr re- rea reb ree ref reg rek rel ren rer rfa rfb rfe rff rfg rfk rfl rfn rfr rga rgb rge rgf rgg rgk rgn rgr rkb rke rkf rkg rkk rla rle rlf rlg rll rln rlr rna rnb rng rnn rnr rra rrb rrf rrg rrk rrl rrn rrr