-al -er a-a a-b aaa aab aae aag aal aan aar ab- aba abb abe abg abl abn abr aea aeb aee aeg ael aen aer ag- aga agb age agg agl agn agr al- ala alb ale alg all aln alr an- ana anb ane ang anl ann anr ar- ara arb are arg arl arn arr baa bab bae bag bal ban bar bba bbb bbe bbg bbl bbn bbr be- bea beb bee beg bel ben ber bga bgb bge bgg bgl bgn bgr bla blb ble blg bll bln blr bna bnb bne bng bnl bnn bnr bra brb bre brg brl brn brr eaa eab eae eag eal ean ear eba ebb ebe ebg ebl ebn ebr eea eeb eee eeg eel een eer ega egb ege egg egl egn egr ela elb ele elg ell eln elr en- ena enb ene eng enl enn enr era erb ere erg erl ern err gaa gab gae gag gal gan gar gba gbe gbg gbl gbn gbr ge- gea geb gee geg gel gen ger gga ggb ggg ggn ggr gla glb gle glg gll gln glr gna gnb gne gnl gnn gnr gra grb gre grg grl grn grr la- laa lab lae lag lal lan lar lba lbb lbe lbg lbl lbr lea leb lee leg lel len ler lga lgb lge lgg lgl lgn lgr lla llb lle llg lll lln llr lna lnb lne lng lnl lnn lnr lra lrb lrg lrn lrr naa nab nae nag nal nan nar nba nbb nbe nbg nbl nbn nbr ne- nea neb nee neg nel nen ner nga ngb nge ngg ngl ngn nla nlb nle nlg nll nln nlr nna nnb nne nng nnl nnn nra nrb nre nrg nrl nrn nrr ra- raa rab rae rag ral ran rar rba rbb rbe rbg rbl rbn rbr re- rea reb ree reg rel ren rer rga rgb rge rgg rgn rgr rla rle rlg rll rln rlr rna rnb rng rnn rnr rra rrb rrg rrl rrn rrr