-al -er a-a a-b aaa aab aae aaf aag aaj aal aar ab- aba abb abe abf abg abj abl abr aea aeb aee aef aeg aej ael aer af- afa afb afe aff afg afj afl afr ag- aga agb age agf agg agj agl agr aja ajb aje ajf ajj ajl ajr al- ala alb ale alf alg alj all alr ar- ara arb are arf arg arj arl arr baa bab bae baf bag baj bal bar bba bbb bbe bbf bbg bbl bbr be- bea beb bee bef beg bel ber bfa bfb bfe bff bfg bfj bfl bfr bga bgb bge bgf bgg bgl bgr bja bjf bjg bjj bjr bla blb ble blf blg blj bll blr bra brb bre brf brg brj brl brr eaa eab eae eaf eag eaj eal ear eba ebb ebe ebf ebg ebj ebl ebr eea eeb eee eef eeg eel eer ef- efa efb efe eff efg efl efr ega egb ege egf egg egl egr eja ejf ejl ela elb ele elf elg ell elr era erb ere erf erg erl err faa fab fae faf fag faj fal far fba fbb fbe fbf fbg fbl fbr fea feb fee fef feg fel fer ffa ffe fff ffg ffl ffr fga fgb fge fgf fgg fgl fgr fja fjb fjg fla flb fle flf flg fll flr fra frb fre frf frg frj frl frr gaa gab gae gaf gag gaj gal gar gba gbe gbf gbg gbj gbl gbr ge- gea geb gee gef geg gel ger gfa gfb gfe gff gfl gfr gga ggb ggg ggj ggr gja gje gjg gjr gla glb gle glf glg glj gll glr gra grb gre grf grg grj grl grr jaa jab jae jaf jag jaj jal jar jba jbf jbg jbj jbl jbr jea jeb jee jef jeg jej jel jer jfa jfb jfe jff jfg jfj jfl jfr jga jgb jge jgr jja jjb jjf jjg jjj jjl jjr jla jlb jle jlf jlg jll jlr jra jrb jrf jrg jrl jrr la- laa lab lae laf lag laj lal lar lba lbb lbe lbf lbg lbj lbl lbr lea leb lee lef leg lej lel ler lfa lfb lfe lff lfg lfl lfr lga lgb lge lgf lgg lgj lgl lgr lje ljf ljj lla llb lle llf llg llj lll llr lra lrb lrf lrg lrr ra- raa rab rae raf rag raj ral rar rba rbb rbe rbf rbg rbl rbr re- rea reb ree ref reg rel rer rfa rfb rfe rff rfg rfj rfl rfr rga rgb rge rgf rgg rgr rja rjf rjg rjr rla rle rlf rlg rll rlr rra rrb rrf rrg rrl rrr