a-a a-c aaa aac aae aag aak aap aas ac- aca acc ace acg ack acp acs aea aec aee aeg aek aep aes ag- aga agc age agg agk agp ags aka akc ake akg akk akp aks ap- apa apc ape apg apk app aps as- asa asc ase asg ask asp ass c-- caa cac cae cag cak cap cas cca ccc cce ccg cck ccp ccs ce- cea cec cee ceg cek cep ces cga cgc cge cgg cgp cgs cka ckc cks cpa cpc cpe cpg cpk cpp cps csa csc cse csg csk csp css eaa eac eae eag eak eap eas ec- eca ecc ece ecg eck ecs eea eec eee eeg eek eep ees ega egc ege egg egp egs eka ekc eke ekg ekp eks ep- epa epc epe epg epp eps es- esa esc ese esg esk esp ess g-p gaa gac gae gag gak gap gas gca gcc gce gcg gck gcp gcs ge- gea gec gee geg gek gep ges gga ggc ggg ggp ggs gka gkp gks gpa gpc gpe gpg gpk gpp gps gsa gsc gse gsg gsk gsp gss ka- kaa kac kae kag kak kap kas kca kcc kce kcg kck kcp kcs ke- kea kec kee keg kek kep kes kga kgc kgp kgs kkc kke kkk kkp kks kpa kpc kpe kpk kpp kps ksa ksc kse ksg ksk ksp kss p-p paa pac pae pag pak pap pas pca pcc pce pcg pck pcp pcs pea pec pee peg pek pep pes pga pgc pge pgg pgk pgp pgs pka pkc pke pkg pkp pks ppa ppc ppe ppg ppk ppp pps ps- psa psc pse psg psk psp pss saa sac sae sag sak sap sas sca scc sce scg sck scp scs se- sea sec see seg sek sep ses sga sgc sge sgg sgk sgp sgs sk- ska skc ske skg skk skp sks spa spc spe spg spk spp sps ss- ssa ssc sse ssg ssk ssp sss