-al a-a a-b aaa aab aae aag aah aal ab- aba abb abe abg abh abl aea aeb aee aeg aeh ael ag- aga agb age agg agh agl aha ahb ahe ahg ahh ahl al- ala alb ale alg alh all baa bab bae bag bah bal bba bbb bbe bbg bbh bbl be- bea beb bee beg beh bel bga bgb bge bgg bgh bgl bha bhb bhe bhg bhh bhl bla blb ble blg blh bll eaa eab eae eag eah eal eba ebb ebe ebg ebh ebl eea eeb eee eeg eel ega egb ege egg egh egl eha ehb ehe ehg ehh ehl ela elb ele elg elh ell gaa gab gae gag gah gal gba gbe gbg gbh gbl ge- gea geb gee geg geh gel gga ggb ggg ggh gha ghb ghe ghg ghh ghl gla glb gle glg glh gll haa hab hae hag hah hal hba hbb hbe hbg hbh hbl he- hea heb hee heg heh hel hga hgb hge hgg hgh hgl hha hhb hhe hhg hhh hhl hla hlb hle hlg hlh hll la- laa lab lae lag lah lal lba lbb lbe lbg lbh lbl lea leb lee leg leh lel lga lgb lge lgg lgh lgl lha lhb lhh lla llb lle llg lll