-al -ol a-a a-c aaa aac aaf aag aal aao aar ac- aca acc acf acg acl aco acr af- afa afc aff afg afl afo afr ag- aga agc agf agg agl ago agr al- ala alc alf alg all alo alr aoa aoc aof aog aol aoo aor ar- ara arc arf arg arl aro arr c-- caa cac caf cag cal cao car cca ccc ccf ccg ccl cco ccr cfa cfc cff cfg cfl cfo cfr cga cgc cgg cgl cgo cgr cl- cla clc clf clg cll clo clr co- coa coc cof cog col coo cor cra crc crf crg crl cro crr faa fac faf fag fal fao far fca fcc fcf fcg fcl fco fcr ffa ffc fff ffg ffl ffo ffr fga fgc fgf fgg fgl fgr fla flc flf flg fll flo flr foa foc fof fog fol foo for fra frc frf frg frl fro frr gaa gac gaf gag gal gao gar gca gcc gcf gcg gcl gco gcr gfa gfc gff gfl gfo gfr gga ggc ggg ggo ggr gla glc glf glg gll glo glr goa goc gof gog gol goo gor gra grc grf grg grl gro grr la- laa lac laf lag lal lao lar lca lcc lcf lcg lcl lco lcr lfa lfc lff lfg lfl lfo lfr lga lgc lgf lgg lgl lgo lgr lla llc llf llg lll llo llr loa loc lof log lol loo lor lra lrc lrf lrg lro lrr oaa oac oaf oag oal oao oar oc- oca occ ocf ocg ocl oco ocr of- ofa ofc off ofg ofl ofo ofr oga ogc ogf ogg ogl ogo ola olc olf olg oll olo oo- ooa ooc oof oog ool ooo oor or- ora orc orf org orl oro orr ra- raa rac raf rag ral rao rar rca rcc rcf rcg rcl rco rcr rfa rfc rff rfg rfl rfo rfr rga rgc rgf rgg rgo rgr rla rlc rlf rlg rll rlo rlr roa roc rof rog rol roo ror rra rrc rrf rrg rrl rrr