-al -ol a-a a-b a-i a-t aaa aab aae aag aai aal aao aat ab- aba abb abe abg abi abl abo abt aea aeb aee aeg aei ael aeo aet ag- aga agb age agg agi agl ago agt ai- aia aib aie aig aii ail aio ait al- ala alb ale alg ali all alo alt aoa aob aoe aog aoi aol aoo aot at- ata atb ate atg ati atl ato att baa bab bae bag bai bal bao bat bba bbb bbe bbg bbi bbl bbo bbt be- bea beb bee beg bei bel beo bet bga bgb bge bgg bgi bgl bgo bgt bi- bia bib bie big bii bil bio bit bla blb ble blg bli bll blo blt boa bob boe bog boi bol boo bot bta btb bte btg bti btl bto btt eaa eab eae eag eai eal eao eat eba ebb ebe ebg ebi ebl ebo ebt eea eeb eee eeg eel eeo eet ega egb ege egg egi egl ego egt eia eib eie eig eii eil eio eit ela elb ele elg eli ell elo elt eo- eoa eob eoe eog eoi eol eoo eot eta etb ete etg eti etl eto ett gaa gab gae gag gai gal gao gat gba gbe gbg gbi gbl gbo gbt ge- gea geb gee geg gei gel geo get gga ggb ggg ggi ggo ggt gia gib gie gig gii gil gio git gla glb gle glg gli gll glo glt goa gob goe gog goi gol goo got gta gtb gte gtg gti gtl gto gtt ia- iaa iab iae iag iai ial iao iat iba ibb ibe ibg ibi ibl ibo ibt ie- iea iee ieg iei iel iet iga igb ige igg igi igl igo igt iia iib iie iii iil iio iit il- ila ilb ile ilg ili ill ilo ilt io- ioa iob ioe iog ioi iol ioo iot ita itb ite itg iti itl ito itt la- laa lab lae lag lai lal lao lat lba lbb lbe lbg lbi lbl lbo lbt lea leb lee leg lei lel leo let lga lgb lge lgg lgi lgl lgo lgt lia lib lie lig lii lil lio lit lla llb lle llg lli lll llo llt loa lob loe log loi lol loo lot lta ltb lte ltg lti ltl lto ltt o-i oaa oab oae oag oai oal oao oat ob- oba obb obe obg obi obl obo obt oea oeb oee oeg oei oel oeo oet oga oge ogg ogi ogl ogo ogt oia oib oie oii oil oio oit ola olb ole olg oli oll olo olt oo- ooa oob oog ooi ool ooo oot ot- ota otb ote otg oti otl oto ott taa tab tae tag tai tal tao tat tba tbb tbe tbg tbi tbl tbo tbt te- tea teb tee teg tei tel teo tet tga tgb tge tgg tgi tgl tgo tgt tia tib tie tig tii til tio tit tla tle tlg tli tll tlo tlt to- toa tob toe tog toi tol too tot tta ttb tte ttg tti ttl tto ttt