-al a-a a-b a-i aaa aab aae aag aai aal ab- aba abb abe abg abi abl aea aeb aee aeg aei ael ag- aga agb age agg agi agl ai- aia aib aie aig aii ail al- ala alb ale alg ali all baa bab bae bag bai bal bba bbb bbe bbg bbi bbl be- bea beb bee beg bei bel bga bgb bge bgg bgi bgl bi- bia bib bie big bii bil bla blb ble blg bli bll eaa eab eae eag eai eal eba ebb ebe ebg ebi ebl eea eeb eee eeg eel ega egb ege egg egi egl eia eib eie eig eii eil ela elb ele elg eli ell gaa gab gae gag gai gal gba gbe gbg gbi gbl ge- gea geb gee geg gei gel gga ggb ggg ggi gia gib gie gig gii gil gla glb gle glg gli gll ia- iaa iab iae iag iai ial iba ibb ibe ibg ibi ibl ie- iea iee ieg iei iel iga igb ige igg igi igl iia iib iie iii iil il- ila ilb ile ilg ili ill la- laa lab lae lag lai lal lba lbb lbe lbg lbi lbl lea leb lee leg lei lel lga lgb lge lgg lgi lgl lia lib lie lig lii lil lla llb lle llg lli lll