-al -er a-a a-b aaa aab aad aae aag aal aan aar ab- aba abb abd abe abg abl abn abr ad- ada adb add ade adg adl adn adr aea aeb aed aee aeg ael aen aer ag- aga agb agd age agg agl agn agr al- ala alb ald ale alg all aln alr an- ana anb and ane ang anl ann anr ar- ara arb ard are arg arl arn arr baa bab bad bae bag bal ban bar bba bbb bbd bbe bbg bbl bbn bbr bda bdb bdd bde bdg bdl bdr be- bea beb bed bee beg bel ben ber bga bgb bgd bge bgg bgl bgn bgr bla blb bld ble blg bll bln blr bna bnb bnd bne bng bnl bnn bnr bra brb brd bre brg brl brn brr daa dab dad dae dag dal dan dar dba dbb dbd dbe dbg dbl dbn dbr dda ddb ddd dde ddg ddl ddn ddr de- dea deb ded dee deg del den der dga dgd dge dgg dgl dgn dgr dl- dla dlb dld dle dlg dll dlr dna dnb dnd dne dng dnl dnn dnr dra drb drd dre drg drl drn drr eaa eab ead eae eag eal ean ear eba ebb ebd ebe ebg ebl ebn ebr ed- eda edb edd ede edg edl edn edr eea eeb eed eee eeg eel een eer ega egb egd ege egg egl egn egr ela elb eld ele elg ell eln elr en- ena enb end ene eng enl enn enr era erb erd ere erg erl ern err g-d gaa gab gad gae gag gal gan gar gba gbd gbe gbg gbl gbn gbr gda gdb gdd gde gdl gdn gdr ge- gea geb ged gee geg gel gen ger gga ggb ggd ggg ggn ggr gla glb gld gle glg gll gln glr gna gnb gnd gne gnl gnn gnr gra grb grd gre grg grl grn grr la- laa lab lad lae lag lal lan lar lba lbb lbd lbe lbg lbl lbr lda ldb ldd lde ldg ldl ldn ldr lea leb led lee leg lel len ler lga lgb lgd lge lgg lgl lgn lgr lla llb lld lle llg lll lln llr lna lnb lnd lne lng lnl lnn lnr lra lrb lrd lrg lrn lrr naa nab nad nae nag nal nan nar nba nbb nbd nbe nbg nbl nbn nbr nda ndb ndd nde ndg ndl ndn ndr ne- nea neb ned nee neg nel nen ner nga ngb ngd nge ngg ngl ngn nla nlb nld nle nlg nll nln nlr nna nnb nne nng nnl nnn nra nrb nrd nre nrg nrl nrn nrr ra- raa rab rad rae rag ral ran rar rba rbb rbd rbe rbg rbl rbn rbr rda rdb rdd rde rdg rdl rdn rdr re- rea reb red ree reg rel ren rer rga rgb rgd rge rgg rgn rgr rla rld rle rlg rll rln rlr rna rnb rnd rng rnn rnr rra rrb rrd rrg rrl rrn rrr