-al -er -ol a-a a-c aaa aac aae aag aal aao aar ac- aca acc ace acg acl aco acr aea aec aee aeg ael aeo aer ag- aga agc age agg agl ago agr al- ala alc ale alg all alo alr aoa aoc aoe aog aol aoo aor ar- ara arc are arg arl aro arr c-- caa cac cae cag cal cao car cca ccc cce ccg ccl cco ccr ce- cea cec cee ceg cel ceo cer cga cgc cge cgg cgl cgo cgr cl- cla clc cle clg cll clo clr co- coa coc coe cog col coo cor cra crc cre crg crl cro crr eaa eac eae eag eal eao ear ec- eca ecc ece ecg ecl eco ecr eea eec eee eeg eel eeo eer ega egc ege egg egl ego egr ela elc ele elg ell elo elr eo- eoa eoc eoe eog eol eoo eor era erc ere erg erl ero err gaa gac gae gag gal gao gar gca gcc gce gcg gcl gco gcr ge- gea gec gee geg gel geo ger gga ggc ggg ggo ggr gla glc gle glg gll glo glr goa goc goe gog gol goo gor gra grc gre grg grl gro grr la- laa lac lae lag lal lao lar lca lcc lce lcg lcl lco lcr lea lec lee leg lel leo ler lga lgc lge lgg lgl lgo lgr lla llc lle llg lll llo llr loa loc loe log lol loo lor lra lrc lrg lro lrr oaa oac oae oag oal oao oar oc- oca occ ocg ocl oco ocr oea oec oee oeg oel oeo oer oga ogc oge ogg ogl ogo ola olc ole olg oll olo oo- ooa ooc oog ool ooo oor or- ora orc ore org orl oro orr ra- raa rac rae rag ral rao rar rca rcc rce rcg rcl rco rcr re- rea rec ree reg rel reo rer rga rgc rge rgg rgo rgr rla rlc rle rlg rll rlo rlr roa roc roe rog rol roo ror rra rrc rrg rrl rrr