a-a a-c aaa aac aae aag aak aan aao aap aas ac- aca acc ace acg ack acn aco acp acs aea aec aee aeg aek aen aeo aep aes ag- aga agc age agg agk agn ago agp ags aka akc ake akg akk akn ako akp aks an- ana anc ane ang ank ann ano anp ans aoa aoc aoe aog aok aon aoo aop aos ap- apa apc ape apg apk apn apo app aps as- asa asc ase asg ask asn aso asp ass c-- caa cac cae cag cak can cao cap cas cca ccc cce ccg cck ccn cco ccp ccs ce- cea cec cee ceg cek cen ceo cep ces cga cgc cge cgg cgn cgo cgp cgs cka ckc cko cks cn- cna cnc cne cng cnn cno cnp cns co- coa coc coe cog cok con coo cop cos cpa cpc cpe cpg cpk cpn cpo cpp cps csa csc cse csg csk csn cso csp css eaa eac eae eag eak ean eao eap eas ec- eca ecc ece ecg eck ecn eco ecs eea eec eee eeg eek een eeo eep ees ega egc ege egg egn ego egp egs eka ekc eke ekg eko ekp eks en- ena enc ene eng enk enn eno enp ens eo- eoa eoc eoe eog eok eon eoo eop eos ep- epa epc epe epg epn epo epp eps es- esa esc ese esg esk esn eso esp ess g-p gaa gac gae gag gak gan gao gap gas gca gcc gce gcg gck gcn gco gcp gcs ge- gea gec gee geg gek gen geo gep ges gga ggc ggg ggn ggo ggp ggs gka gkn gko gkp gks gna gnc gne gnn gno gnp gns goa goc goe gog gok gon goo gop gos gpa gpc gpe gpg gpk gpn gpo gpp gps gsa gsc gse gsg gsk gsn gso gsp gss ka- kaa kac kae kag kak kan kao kap kas kca kcc kce kcg kck kcn kcp kcs ke- kea kec kee keg kek ken keo kep kes kga kgc kgo kgp kgs kkc kke kkk kkn kkp kks kn- kna knc kne kng knk knn kno knp koa koc koe kog kok kon koo kop kos kpa kpc kpe kpk kpn kpo kpp kps ksa ksc kse ksg ksk ksn kso ksp kss naa nac nae nag nak nan nao nap nas nca ncc nce ncg nck ncn nco ncp ncs ne- nea nec nee neg nek nen neo nep nes nga ngc nge ngg ngk ngn ngo ngp ngs nka nkc nke nkk nkn nko nkp nks nna nnc nne nng nnk nnn nno nnp nns no- noa noc noe nog nok non noo nop nos npa npc npe npg npn npo npp nps nsa nsc nse nsg nsk nsn nso nsp nss oaa oac oae oag oak oan oao oap oas oc- oca occ ocg ock ocn oco ocp ocs oea oec oee oeg oen oeo oep oes oga ogc oge ogg ogn ogo ogp ogs oka okc oke okg okk oko okp oks on- ona onc one ong onk onn ono onp ons oo- ooa ooc oog ook oon ooo oop oos op- opa opc ope opg opk opn opo opp ops os- osa osc ose osg osk osn oso osp oss p-p paa pac pae pag pak pan pao pap pas pca pcc pce pcg pck pcn pco pcp pcs pea pec pee peg pek pen peo pep pes pga pgc pge pgg pgk pgn pgo pgp pgs pka pkc pke pkg pkn pko pkp pks pn- pna pnc pne png pnk pnn pno pnp pns poa poc poe pog pok pon poo pop pos ppa ppc ppe ppg ppk ppn ppo ppp pps ps- psa psc pse psg psk psn pso psp pss saa sac sae sag sak san sao sap sas sca scc sce scg sck scn sco scp scs se- sea sec see seg sek sen seo sep ses sga sgc sge sgg sgk sgn sgo sgp sgs sk- ska skc ske skg skk sko skp sks sna snc sne sng snk snn sno snp sns soa soc soe sog sok son soo sop sos spa spc spe spg spk spn spo spp sps ss- ssa ssc sse ssg ssk ssn sso ssp sss