-al -er a-a a-b aaa aab aae aag aak aal aan aar ab- aba abb abe abg abk abl abn abr aea aeb aee aeg aek ael aen aer ag- aga agb age agg agk agl agn agr aka akb ake akg akk akl akn akr al- ala alb ale alg alk all aln alr an- ana anb ane ang ank anl ann anr ar- ara arb are arg ark arl arn arr baa bab bae bag bak bal ban bar bba bbb bbe bbg bbk bbl bbn bbr be- bea beb bee beg bek bel ben ber bga bgb bge bgg bgk bgl bgn bgr bka bkb bke bkg bkk bkl bkn bkr bla blb ble blg blk bll bln blr bna bnb bne bng bnk bnl bnn bnr bra brb bre brg brk brl brn brr eaa eab eae eag eak eal ean ear eba ebb ebe ebg ebk ebl ebn ebr eea eeb eee eeg eek eel een eer ega egb ege egg egl egn egr eka ekb eke ekg ekl ekr ela elb ele elg elk ell eln elr en- ena enb ene eng enk enl enn enr era erb ere erg erk erl ern err gaa gab gae gag gak gal gan gar gba gbe gbg gbk gbl gbn gbr ge- gea geb gee geg gek gel gen ger gga ggb ggg ggn ggr gka gkb gkn gla glb gle glg glk gll gln glr gna gnb gne gnl gnn gnr gra grb gre grg grk grl grn grr ka- kaa kab kae kag kak kal kan kar kba kbb kbe kbk kbl kbn kbr ke- kea keb kee keg kek kel ken ker kga kgb kgl kkb kke kkk kkl kkn kkr kl- kla klb klg klr kn- kna kne kng knk knl knn knr kra krg krk krl krn krr la- laa lab lae lag lak lal lan lar lba lbb lbe lbg lbk lbl lbr lea leb lee leg lek lel len ler lga lgb lge lgg lgk lgl lgn lgr lka lkb lkg lkl lkr lla llb lle llg llk lll lln llr lna lnb lne lng lnk lnl lnn lnr lra lrb lrg lrk lrn lrr naa nab nae nag nak nal nan nar nba nbb nbe nbg nbk nbl nbn nbr ne- nea neb nee neg nek nel nen ner nga ngb nge ngg ngk ngl ngn nka nke nkk nkn nkr nla nlb nle nlg nlk nll nln nlr nna nnb nne nng nnk nnl nnn nra nrb nre nrg nrk nrl nrn nrr ra- raa rab rae rag rak ral ran rar rba rbb rbe rbg rbk rbl rbn rbr re- rea reb ree reg rek rel ren rer rga rgb rge rgg rgk rgn rgr rkb rke rkg rkk rla rle rlg rll rln rlr rna rnb rng rnn rnr rra rrb rrg rrk rrl rrn rrr