-al -ol a-a a-b a-t aaa aab aae aag aal aao aat ab- aba abb abe abg abl abo abt aea aeb aee aeg ael aeo aet ag- aga agb age agg agl ago agt al- ala alb ale alg all alo alt aoa aob aoe aog aol aoo aot at- ata atb ate atg atl ato att baa bab bae bag bal bao bat bba bbb bbe bbg bbl bbo bbt be- bea beb bee beg bel beo bet bga bgb bge bgg bgl bgo bgt bla blb ble blg bll blo blt boa bob boe bog bol boo bot bta btb bte btg btl bto btt eaa eab eae eag eal eao eat eba ebb ebe ebg ebl ebo ebt eea eeb eee eeg eel eeo eet ega egb ege egg egl ego egt ela elb ele elg ell elo elt eo- eoa eob eoe eog eol eoo eot eta etb ete etg etl eto ett gaa gab gae gag gal gao gat gba gbe gbg gbl gbo gbt ge- gea geb gee geg gel geo get gga ggb ggg ggo ggt gla glb gle glg gll glo glt goa gob goe gog gol goo got gta gtb gte gtg gtl gto gtt la- laa lab lae lag lal lao lat lba lbb lbe lbg lbl lbo lbt lea leb lee leg lel leo let lga lgb lge lgg lgl lgo lgt lla llb lle llg lll llo llt loa lob loe log lol loo lot lta ltb lte ltg ltl lto ltt oaa oab oae oag oal oao oat ob- oba obb obe obg obl obo obt oea oeb oee oeg oel oeo oet oga oge ogg ogl ogo ogt ola olb ole olg oll olo olt oo- ooa oob oog ool ooo oot ot- ota otb ote otg otl oto ott taa tab tae tag tal tao tat tba tbb tbe tbg tbl tbo tbt te- tea teb tee teg tel teo tet tga tgb tge tgg tgl tgo tgt tla tle tlg tll tlo tlt to- toa tob toe tog tol too tot tta ttb tte ttg ttl tto ttt