-al a-a a-b aaa aab aae aag aal ab- aba abb abe abg abl aea aeb aee aeg ael ag- aga agb age agg agl al- ala alb ale alg all baa bab bae bag bal bba bbb bbe bbg bbl be- bea beb bee beg bel bga bgb bge bgg bgl bla blb ble blg bll eaa eab eae eag eal eba ebb ebe ebg ebl eea eeb eee eeg eel ega egb ege egg egl ela elb ele elg ell gaa gab gae gag gal gba gbe gbg gbl ge- gea geb gee geg gel gga ggb ggg gla glb gle glg gll la- laa lab lae lag lal lba lbb lbe lbg lbl lea leb lee leg lel lga lgb lge lgg lgl lla llb lle llg lll