a-a a-c aaa aac aag aan aao aap aar ac- aca acc acg acn aco acp acr ag- aga agc agg agn ago agp agr an- ana anc ang ann ano anp anr aoa aoc aog aon aoo aop aor ap- apa apc apg apn apo app apr ar- ara arc arg arn aro arp arr c-- caa cac cag can cao cap car cca ccc ccg ccn cco ccp ccr cga cgc cgg cgn cgo cgp cgr cn- cna cnc cng cnn cno cnp cnr co- coa coc cog con coo cop cor cpa cpc cpg cpn cpo cpp cpr cra crc crg crn cro crp crr g-p gaa gac gag gan gao gap gar gca gcc gcg gcn gco gcp gcr gga ggc ggg ggn ggo ggp ggr gna gnc gnn gno gnp gnr goa goc gog gon goo gop gor gpa gpc gpg gpn gpo gpp gpr gra grc grg grn gro grp grr naa nac nag nan nao nap nar nca ncc ncg ncn nco ncp ncr nga ngc ngg ngn ngo ngp nna nnc nng nnn nno nnp no- noa noc nog non noo nop nor npa npc npg npn npo npp npr nra nrc nrg nrn nro nrp nrr oaa oac oag oan oao oap oar oc- oca occ ocg ocn oco ocp ocr oga ogc ogg ogn ogo ogp on- ona onc ong onn ono onp onr oo- ooa ooc oog oon ooo oop oor op- opa opc opg opn opo opp opr or- ora orc org orn oro orp orr p-p paa pac pag pan pao pap par pca pcc pcg pcn pco pcp pcr pga pgc pgg pgn pgo pgp pgr pn- pna pnc png pnn pno pnp pnr poa poc pog pon poo pop por ppa ppc ppg ppn ppo ppp ppr pra prc prg prn pro prp prr ra- raa rac rag ran rao rap rar rca rcc rcg rcn rco rcp rcr rga rgc rgg rgn rgo rgp rgr rna rnc rng rnn rno rnp rnr roa roc rog ron roo rop ror rpa rpc rpg rpn rpo rpp rpr rra rrc rrg rrn rrp rrr