a-a a-c aaa aac aag aan aap aar aas ac- aca acc acg acn acp acr acs ag- aga agc agg agn agp agr ags an- ana anc ang ann anp anr ans ap- apa apc apg apn app apr aps ar- ara arc arg arn arp arr ars as- asa asc asg asn asp asr ass c-- caa cac cag can cap car cas cca ccc ccg ccn ccp ccr ccs cga cgc cgg cgn cgp cgr cgs cn- cna cnc cng cnn cnp cnr cns cpa cpc cpg cpn cpp cpr cps cra crc crg crn crp crr crs csa csc csg csn csp csr css g-p gaa gac gag gan gap gar gas gca gcc gcg gcn gcp gcr gcs gga ggc ggg ggn ggp ggr ggs gna gnc gnn gnp gnr gns gpa gpc gpg gpn gpp gpr gps gra grc grg grn grp grr grs gsa gsc gsg gsn gsp gsr gss naa nac nag nan nap nar nas nca ncc ncg ncn ncp ncr ncs nga ngc ngg ngn ngp ngs nna nnc nng nnn nnp nns npa npc npg npn npp npr nps nra nrc nrg nrn nrp nrr nrs nsa nsc nsg nsn nsp nsr nss p-p paa pac pag pan pap par pas pca pcc pcg pcn pcp pcr pcs pga pgc pgg pgn pgp pgr pgs pn- pna pnc png pnn pnp pnr pns ppa ppc ppg ppn ppp ppr pps pra prc prg prn prp prr prs ps- psa psc psg psn psp psr pss ra- raa rac rag ran rap rar ras rca rcc rcg rcn rcp rcr rcs rga rgc rgg rgn rgp rgr rgs rna rnc rng rnn rnp rnr rns rpa rpc rpg rpn rpp rpr rps rra rrc rrg rrn rrp rrr rrs rsa rsc rsg rsn rsp rsr rss saa sac sag san sap sar sas sca scc scg scn scp scr scs sga sgc sgg sgn sgp sgr sgs sna snc sng snn snp snr sns spa spc spg spn spp spr sps sr- sra src srg srn srp srr srs ss- ssa ssc ssg ssn ssp ssr sss