-al -er a-a a-b aaa aab aae aag aak aal aar ab- aba abb abe abg abk abl abr aea aeb aee aeg aek ael aer ag- aga agb age agg agk agl agr aka akb ake akg akk akl akr al- ala alb ale alg alk all alr ar- ara arb are arg ark arl arr baa bab bae bag bak bal bar bba bbb bbe bbg bbk bbl bbr be- bea beb bee beg bek bel ber bga bgb bge bgg bgk bgl bgr bka bkb bke bkg bkk bkl bkr bla blb ble blg blk bll blr bra brb bre brg brk brl brr eaa eab eae eag eak eal ear eba ebb ebe ebg ebk ebl ebr eea eeb eee eeg eek eel eer ega egb ege egg egl egr eka ekb eke ekg ekl ekr ela elb ele elg elk ell elr era erb ere erg erk erl err gaa gab gae gag gak gal gar gba gbe gbg gbk gbl gbr ge- gea geb gee geg gek gel ger gga ggb ggg ggr gka gkb gla glb gle glg glk gll glr gra grb gre grg grk grl grr ka- kaa kab kae kag kak kal kar kba kbb kbe kbk kbl kbr ke- kea keb kee keg kek kel ker kga kgb kgl kkb kke kkk kkl kkr kl- kla klb klg klr kra krg krk krl krr la- laa lab lae lag lak lal lar lba lbb lbe lbg lbk lbl lbr lea leb lee leg lek lel ler lga lgb lge lgg lgk lgl lgr lka lkb lkg lkl lkr lla llb lle llg llk lll llr lra lrb lrg lrk lrr ra- raa rab rae rag rak ral rar rba rbb rbe rbg rbk rbl rbr re- rea reb ree reg rek rel rer rga rgb rge rgg rgk rgr rkb rke rkg rkk rla rle rlg rll rlr rra rrb rrg rrk rrl rrr