-er -ic a-a a-c a-i aaa aac aae aag aai aak aan aap aar ac- aca acc ace acg aci ack acn acp acr aea aec aee aeg aei aek aen aep aer ag- aga agc age agg agi agk agn agp agr ai- aia aic aie aig aii aik ain aip air aka akc ake akg aki akk akn akp akr an- ana anc ane ang ani ank ann anp anr ap- apa apc ape apg api apk apn app apr ar- ara arc are arg ari ark arn arp arr c-- caa cac cae cag cai cak can cap car cca ccc cce ccg cci cck ccn ccp ccr ce- cea cec cee ceg cei cek cen cep cer cga cgc cge cgg cgi cgn cgp cgr ci- cia cic cie cig cii cik cin cip cir cka ckc cki cn- cna cnc cne cng cni cnn cnp cnr cpa cpc cpe cpg cpi cpk cpn cpp cpr cra crc cre crg cri crk crn crp crr eaa eac eae eag eai eak ean eap ear ec- eca ecc ece ecg eci eck ecn ecr eea eec eee eeg eek een eep eer ega egc ege egg egi egn egp egr eia eic eie eig eii eik ein eip eir eka ekc eke ekg eki ekp ekr en- ena enc ene eng eni enk enn enp enr ep- epa epc epe epg epi epn epp epr era erc ere erg eri erk ern erp err g-p gaa gac gae gag gai gak gan gap gar gca gcc gce gcg gci gck gcn gcp gcr ge- gea gec gee geg gei gek gen gep ger gga ggc ggg ggi ggn ggp ggr gia gic gie gig gii gik gin gip gir gka gkn gkp gna gnc gne gni gnn gnp gnr gpa gpc gpe gpg gpi gpk gpn gpp gpr gra grc gre grg gri grk grn grp grr ia- iaa iac iae iag iai ian iap iar ica icc ice icg ici ick icn icp icr ie- iea iec iee ieg iei iek ien iep ier iga igc ige igg igi igk ign igp igr iia iic iie iii iin iip iir ika ikc ike iki ikk ikr in- ina inc ine ing ini ink inn inp inr ipa ipc ipe ipg ipi ipn ipp ipr ir- ira irc ire irg iri irk irn irp irr ka- kaa kac kae kag kai kak kan kap kar kca kcc kce kcg kci kck kcn kcp kcr ke- kea kec kee keg kei kek ken kep ker kga kgc kgi kgp kia kic kie kig kii kik kin kip kir kkc kke kki kkk kkn kkp kkr kn- kna knc kne kng kni knk knn knp knr kpa kpc kpe kpi kpk kpn kpp kpr kra krc krg kri krk krn krp krr n-i naa nac nae nag nai nak nan nap nar nca ncc nce ncg nci nck ncn ncp ncr ne- nea nec nee neg nei nek nen nep ner nga ngc nge ngg ngi ngk ngn ngp nia nic nie nig nii nik nin nip nir nka nkc nke nki nkk nkn nkp nkr nna nnc nne nng nni nnk nnn nnp npa npc npe npg npi npn npp npr nra nrc nre nrg nri nrk nrn nrp nrr p-p paa pac pae pag pai pak pan pap par pca pcc pce pcg pci pck pcn pcp pcr pea pec pee peg pei pek pen pep per pga pgc pge pgg pgi pgk pgn pgp pgr pia pic pie pig pii pik pin pip pir pka pkc pke pkg pki pkn pkp pkr pn- pna pnc pne png pni pnk pnn pnp pnr ppa ppc ppe ppg ppi ppk ppn ppp ppr pra prc pre prg pri prk prn prp prr ra- raa rac rae rag rai rak ran rap rar rca rcc rce rcg rci rcn rcp rcr re- rea rec ree reg rei rek ren rep rer rga rgc rge rgg rgi rgk rgn rgp rgr ria ric rie rig rii rik rin rip rir rkc rke rkg rkk rkp rna rnc rng rni rnn rnp rnr rpa rpc rpe rpg rpi rpk rpn rpp rpr rra rrc rrg rri rrk rrn rrp rrr