a-a a-c aaa aac aae aag aak aap ac- aca acc ace acg ack acp aea aec aee aeg aek aep ag- aga agc age agg agk agp aka akc ake akg akk akp ap- apa apc ape apg apk app c-- caa cac cae cag cak cap cca ccc cce ccg cck ccp ce- cea cec cee ceg cek cep cga cgc cge cgg cgp cka ckc cpa cpc cpe cpg cpk cpp eaa eac eae eag eak eap ec- eca ecc ece ecg eck eea eec eee eeg eek eep ega egc ege egg egp eka ekc eke ekg ekp ep- epa epc epe epg epp g-p gaa gac gae gag gak gap gca gcc gce gcg gck gcp ge- gea gec gee geg gek gep gga ggc ggg ggp gka gkp gpa gpc gpe gpg gpk gpp ka- kaa kac kae kag kak kap kca kcc kce kcg kck kcp ke- kea kec kee keg kek kep kga kgc kgp kkc kke kkk kkp kpa kpc kpe kpk kpp p-p paa pac pae pag pak pap pca pcc pce pcg pck pcp pea pec pee peg pek pep pga pgc pge pgg pgk pgp pka pkc pke pkg pkp ppa ppc ppe ppg ppk ppp