-al -er a-a a-b aaa aab aae aag aal aar ab- aba abb abe abg abl abr aea aeb aee aeg ael aer ag- aga agb age agg agl agr al- ala alb ale alg all alr ar- ara arb are arg arl arr baa bab bae bag bal bar bba bbb bbe bbg bbl bbr be- bea beb bee beg bel ber bga bgb bge bgg bgl bgr bla blb ble blg bll blr bra brb bre brg brl brr eaa eab eae eag eal ear eba ebb ebe ebg ebl ebr eea eeb eee eeg eel eer ega egb ege egg egl egr ela elb ele elg ell elr era erb ere erg erl err gaa gab gae gag gal gar gba gbe gbg gbl gbr ge- gea geb gee geg gel ger gga ggb ggg ggr gla glb gle glg gll glr gra grb gre grg grl grr la- laa lab lae lag lal lar lba lbb lbe lbg lbl lbr lea leb lee leg lel ler lga lgb lge lgg lgl lgr lla llb lle llg lll llr lra lrb lrg lrr ra- raa rab rae rag ral rar rba rbb rbe rbg rbl rbr re- rea reb ree reg rel rer rga rgb rge rgg rgr rla rle rlg rll rlr rra rrb rrg rrl rrr