-al -ol a-a a-c aaa aac aad aae aag aal aao ac- aca acc acd ace acg acl aco ad- ada adc add ade adg adl ado aea aec aed aee aeg ael aeo ag- aga agc agd age agg agl ago al- ala alc ald ale alg all alo aoa aoc aod aoe aog aol aoo c-- caa cac cad cae cag cal cao cca ccc ccd cce ccg ccl cco cda cdc cdd cde cdg cdl cdo ce- cea cec ced cee ceg cel ceo cga cgc cgd cge cgg cgl cgo cl- cla clc cld cle clg cll clo co- coa coc cod coe cog col coo daa dac dad dae dag dal dao dca dcc dcd dce dcg dcl dco dda ddc ddd dde ddg ddl ddo de- dea dec ded dee deg del deo dga dgc dgd dge dgg dgl dl- dla dlc dld dle dlg dll dlo doa doc dod doe dog dol doo eaa eac ead eae eag eal eao ec- eca ecc ecd ece ecg ecl eco ed- eda edc edd ede edg edl edo eea eec eed eee eeg eel eeo ega egc egd ege egg egl ego ela elc eld ele elg ell elo eo- eoa eoc eod eoe eog eol eoo g-d gaa gac gad gae gag gal gao gca gcc gcd gce gcg gcl gco gda gdc gdd gde gdl gdo ge- gea gec ged gee geg gel geo gga ggc ggd ggg ggo gla glc gld gle glg gll glo goa goc god goe gog gol goo la- laa lac lad lae lag lal lao lca lcc lcd lce lcg lcl lco lda ldc ldd lde ldg ldl ldo lea lec led lee leg lel leo lga lgc lgd lge lgg lgl lgo lla llc lld lle llg lll llo loa loc lod loe log lol loo oaa oac oad oae oag oal oao oc- oca occ ocd ocg ocl oco oda odc odd ode odg odl odo oea oec oed oee oeg oel oeo oga ogc ogd oge ogg ogl ogo ola olc old ole olg oll olo oo- ooa ooc ood oog ool ooo