-al -er a-a a-b a-t aaa aab aae aaf aag aal aar aat ab- aba abb abe abf abg abl abr abt aea aeb aee aef aeg ael aer aet af- afa afb afe aff afg afl afr aft ag- aga agb age agf agg agl agr agt al- ala alb ale alf alg all alr alt ar- ara arb are arf arg arl arr art at- ata atb ate atf atg atl atr att baa bab bae baf bag bal bar bat bba bbb bbe bbf bbg bbl bbr bbt be- bea beb bee bef beg bel ber bet bfa bfb bfe bff bfg bfl bfr bft bga bgb bge bgf bgg bgl bgr bgt bla blb ble blf blg bll blr blt bra brb bre brf brg brl brr brt bta btb bte btf btg btl btr btt eaa eab eae eaf eag eal ear eat eba ebb ebe ebf ebg ebl ebr ebt eea eeb eee eef eeg eel eer eet ef- efa efb efe eff efg efl efr eft ega egb ege egf egg egl egr egt ela elb ele elf elg ell elr elt era erb ere erf erg erl err ert eta etb ete etf etg etl etr ett faa fab fae faf fag fal far fat fba fbb fbe fbf fbg fbl fbr fbt fea feb fee fef feg fel fer fet ffa ffe fff ffg ffl ffr fft fga fgb fge fgf fgg fgl fgr fgt fla flb fle flf flg fll flr flt fra frb fre frf frg frl frr frt fta ftb fte ftf ftg ftl ftr ftt gaa gab gae gaf gag gal gar gat gba gbe gbf gbg gbl gbr gbt ge- gea geb gee gef geg gel ger get gfa gfb gfe gff gfl gfr gft gga ggb ggg ggr ggt gla glb gle glf glg gll glr glt gra grb gre grf grg grl grr grt gta gtb gte gtf gtg gtl gtr gtt la- laa lab lae laf lag lal lar lat lba lbb lbe lbf lbg lbl lbr lbt lea leb lee lef leg lel ler let lfa lfb lfe lff lfg lfl lfr lft lga lgb lge lgf lgg lgl lgr lgt lla llb lle llf llg lll llr llt lra lrb lrf lrg lrr lrt lta ltb lte ltf ltg ltl ltr ltt ra- raa rab rae raf rag ral rar rat rba rbb rbe rbf rbg rbl rbr rbt re- rea reb ree ref reg rel rer ret rfa rfb rfe rff rfg rfl rfr rft rga rgb rge rgf rgg rgr rgt rla rle rlf rlg rll rlr rlt rra rrb rrf rrg rrl rrr rrt rta rtb rte rtf rtg rtl rtr rtt taa tab tae taf tag tal tar tat tba tbb tbe tbf tbg tbl tbr tbt te- tea teb tee tef teg tel ter tet tfa tfb tfe tff tfg tfl tfr tft tga tgb tge tgf tgg tgl tgr tgt tla tle tlf tlg tll tlr tlt tra trb tre trf trg trl trr trt tta ttb tte ttf ttg ttl ttr ttt