a-a a-c aaa aac aag aan aao aap aas ac- aca acc acg acn aco acp acs ag- aga agc agg agn ago agp ags an- ana anc ang ann ano anp ans aoa aoc aog aon aoo aop aos ap- apa apc apg apn apo app aps as- asa asc asg asn aso asp ass c-- caa cac cag can cao cap cas cca ccc ccg ccn cco ccp ccs cga cgc cgg cgn cgo cgp cgs cn- cna cnc cng cnn cno cnp cns co- coa coc cog con coo cop cos cpa cpc cpg cpn cpo cpp cps csa csc csg csn cso csp css g-p gaa gac gag gan gao gap gas gca gcc gcg gcn gco gcp gcs gga ggc ggg ggn ggo ggp ggs gna gnc gnn gno gnp gns goa goc gog gon goo gop gos gpa gpc gpg gpn gpo gpp gps gsa gsc gsg gsn gso gsp gss naa nac nag nan nao nap nas nca ncc ncg ncn nco ncp ncs nga ngc ngg ngn ngo ngp ngs nna nnc nng nnn nno nnp nns no- noa noc nog non noo nop nos npa npc npg npn npo npp nps nsa nsc nsg nsn nso nsp nss oaa oac oag oan oao oap oas oc- oca occ ocg ocn oco ocp ocs oga ogc ogg ogn ogo ogp ogs on- ona onc ong onn ono onp ons oo- ooa ooc oog oon ooo oop oos op- opa opc opg opn opo opp ops os- osa osc osg osn oso osp oss p-p paa pac pag pan pao pap pas pca pcc pcg pcn pco pcp pcs pga pgc pgg pgn pgo pgp pgs pn- pna pnc png pnn pno pnp pns poa poc pog pon poo pop pos ppa ppc ppg ppn ppo ppp pps ps- psa psc psg psn pso psp pss saa sac sag san sao sap sas sca scc scg scn sco scp scs sga sgc sgg sgn sgo sgp sgs sna snc sng snn sno snp sns soa soc sog son soo sop sos spa spc spg spn spo spp sps ss- ssa ssc ssg ssn sso ssp sss