-al -ol a-a a-b aaa aab aae aag aal aao ab- aba abb abe abg abl abo aea aeb aee aeg ael aeo ag- aga agb age agg agl ago al- ala alb ale alg all alo aoa aob aoe aog aol aoo baa bab bae bag bal bao bba bbb bbe bbg bbl bbo be- bea beb bee beg bel beo bga bgb bge bgg bgl bgo bla blb ble blg bll blo boa bob boe bog bol boo eaa eab eae eag eal eao eba ebb ebe ebg ebl ebo eea eeb eee eeg eel eeo ega egb ege egg egl ego ela elb ele elg ell elo eo- eoa eob eoe eog eol eoo gaa gab gae gag gal gao gba gbe gbg gbl gbo ge- gea geb gee geg gel geo gga ggb ggg ggo gla glb gle glg gll glo goa gob goe gog gol goo la- laa lab lae lag lal lao lba lbb lbe lbg lbl lbo lea leb lee leg lel leo lga lgb lge lgg lgl lgo lla llb lle llg lll llo loa lob loe log lol loo oaa oab oae oag oal oao ob- oba obb obe obg obl obo oea oeb oee oeg oel oeo oga oge ogg ogl ogo ola olb ole olg oll olo oo- ooa oob oog ool ooo