-er -ic c-- ccc cce ccg cci cck ccn cco ccr ccs ce- cec cee ceg cei cek cen ceo cer ces cgc cge cgg cgi cgn cgo cgr cgs ci- cic cie cig cii cik cin cio cir cis ckc cki cko cks cn- cnc cne cng cni cnn cno cnr cns co- coc coe cog coi cok con coo cor cos crc cre crg cri crk crn cro crr crs csc cse csg csi csk csn cso csr css ec- ecc ece ecg eci eck ecn eco ecr ecs eec eee eeg eek een eeo eer ees egc ege egg egi egn ego egr egs eic eie eig eii eik ein eio eir eis ekc eke ekg eki eko ekr eks en- enc ene eng eni enk enn eno enr ens eo- eoc eoe eog eoi eok eon eoo eor eos erc ere erg eri erk ern ero err ers es- esc ese esg esi esk esn eso esr ess gcc gce gcg gci gck gcn gco gcr gcs ge- gec gee geg gei gek gen geo ger ges ggc ggg ggi ggn ggo ggr ggs gic gie gig gii gik gin gio gir gis gkn gko gks gnc gne gni gnn gno gnr gns goc goe gog goi gok gon goo gor gos grc gre grg gri grk grn gro grr grs gsc gse gsg gsi gsk gsn gso gsr gss icc ice icg ici ick icn ico icr ics ie- iec iee ieg iei iek ien ier ies igc ige igg igi igk ign igo igr igs iic iie iii iin iio iir iis ikc ike iki ikk iko ikr iks in- inc ine ing ini ink inn ino inr ins io- ioc ioe iog ioi ion ioo ior ios ir- irc ire irg iri irk irn iro irr irs is- isc ise isg isi isk isn iso isr iss kcc kce kcg kci kck kcn kcr kcs ke- kec kee keg kei kek ken keo ker kes kgc kgi kgo kgs kic kie kig kii kik kin kio kir kis kkc kke kki kkk kkn kkr kks kn- knc kne kng kni knk knn kno knr koc koe kog koi kok kon koo kor kos krc krg kri krk krn kro krr krs ksc kse ksg ksi ksk ksn kso ksr kss n-i ncc nce ncg nci nck ncn nco ncr ncs ne- nec nee neg nei nek nen neo ner nes ngc nge ngg ngi ngk ngn ngo ngs nic nie nig nii nik nin nio nir nis nkc nke nki nkk nkn nko nkr nks nnc nne nng nni nnk nnn nno nns no- noc noe nog noi nok non noo nor nos nrc nre nrg nri nrk nrn nro nrr nrs nsc nse nsg nsi nsk nsn nso nsr nss o-i oc- occ ocg oci ock ocn oco ocr ocs oec oee oeg oei oen oeo oer oes ogc oge ogg ogi ogn ogo ogs oic oie oii oik oin oio oir ois okc oke okg oki okk oko okr oks on- onc one ong oni onk onn ono onr ons oo- ooc oog ooi ook oon ooo oor oos or- orc ore org ori ork orn oro orr ors os- osc ose osg osi osk osn oso osr oss rcc rce rcg rci rcn rco rcr rcs re- rec ree reg rei rek ren reo rer res rgc rge rgg rgi rgk rgn rgo rgr rgs ric rie rig rii rik rin rio rir ris rkc rke rkg rkk rko rks rnc rng rni rnn rno rnr rns roc roe rog roi rok ron roo ror ros rrc rrg rri rrk rrn rrr rrs rsc rse rsg rsi rsk rsn rso rsr rss scc sce scg sci sck scn sco scr scs se- sec see seg sei sek sen seo ser ses sgc sge sgg sgi sgk sgn sgo sgr sgs sic sie sig sii sik sin sio sir sis sk- skc ske skg ski skk sko skr sks snc sne sng sni snk snn sno snr sns soc soe sog soi sok son soo sor sos sr- src sre srg sri srk srn sro srr srs ss- ssc sse ssg ssi ssk ssn sso ssr sss