a-a a-c aaa aac aaf aag aaj aao aar ac- aca acc acf acg acj aco acr af- afa afc aff afg afj afo afr ag- aga agc agf agg agj ago agr aja ajc ajf ajj ajo ajr aoa aoc aof aog aoj aoo aor ar- ara arc arf arg arj aro arr c-- c-j caa cac caf cag caj cao car cca ccc ccf ccg ccj cco ccr cfa cfc cff cfg cfo cfr cga cgc cgg cgo cgr cja cjc cjf cjg cjr co- coa coc cof cog coj coo cor cra crc crf crg crj cro crr faa fac faf fag faj fao far fca fcc fcf fcg fcj fco fcr ffa ffc fff ffg ffo ffr fga fgc fgf fgg fgr fja fjc fjg foa foc fof fog foo for fra frc frf frg frj fro frr gaa gac gaf gag gaj gao gar gca gcc gcf gcg gco gcr gfa gfc gff gfo gfr gga ggc ggg ggj ggo ggr gja gjc gjg gjr goa goc gof gog goo gor gra grc grf grg grj gro grr jaa jac jaf jag jaj jao jar jca jcc jcf jco jcr jfa jfc jff jfg jfj jfo jfr jga jgo jgr jja jjc jjf jjg jjj jjr joa joc jof jog joj joo jor jra jrc jrf jrg jro jrr oaa oac oaf oag oaj oao oar oc- oca occ ocf ocg ocj oco ocr of- ofa ofc off ofg ofo ofr oga ogc ogf ogg ogo oja ojc ojo oo- ooa ooc oof oog ooo oor or- ora orc orf org oro orr ra- raa rac raf rag raj rao rar rca rcc rcf rcg rcj rco rcr rfa rfc rff rfg rfj rfo rfr rga rgc rgf rgg rgo rgr rja rjc rjf rjg rjr roa roc rof rog roj roo ror rra rrc rrf rrg rrr