a-a a-c aaa aac aae aag aak aan aap ac- aca acc ace acg ack acn acp aea aec aee aeg aek aen aep ag- aga agc age agg agk agn agp aka akc ake akg akk akn akp an- ana anc ane ang ank ann anp ap- apa apc ape apg apk apn app c-- caa cac cae cag cak can cap cca ccc cce ccg cck ccn ccp ce- cea cec cee ceg cek cen cep cga cgc cge cgg cgn cgp cka ckc cn- cna cnc cne cng cnn cnp cpa cpc cpe cpg cpk cpn cpp eaa eac eae eag eak ean eap ec- eca ecc ece ecg eck ecn eea eec eee eeg eek een eep ega egc ege egg egn egp eka ekc eke ekg ekp en- ena enc ene eng enk enn enp ep- epa epc epe epg epn epp g-p gaa gac gae gag gak gan gap gca gcc gce gcg gck gcn gcp ge- gea gec gee geg gek gen gep gga ggc ggg ggn ggp gka gkn gkp gna gnc gne gnn gnp gpa gpc gpe gpg gpk gpn gpp ka- kaa kac kae kag kak kan kap kca kcc kce kcg kck kcn kcp ke- kea kec kee keg kek ken kep kga kgc kgp kkc kke kkk kkn kkp kn- kna knc kne kng knk knn knp kpa kpc kpe kpk kpn kpp naa nac nae nag nak nan nap nca ncc nce ncg nck ncn ncp ne- nea nec nee neg nek nen nep nga ngc nge ngg ngk ngn ngp nka nkc nke nkk nkn nkp nna nnc nne nng nnk nnn nnp npa npc npe npg npn npp p-p paa pac pae pag pak pan pap pca pcc pce pcg pck pcn pcp pea pec pee peg pek pen pep pga pgc pge pgg pgk pgn pgp pka pkc pke pkg pkn pkp pn- pna pnc pne png pnk pnn pnp ppa ppc ppe ppg ppk ppn ppp