-er -ic c-- ccc cce ccg cci cck ccn cco ccp ccr ccs ce- cec cee ceg cei cek cen ceo cep cer ces cgc cge cgg cgi cgn cgo cgp cgr cgs ci- cic cie cig cii cik cin cio cip cir cis ckc cki cko cks cn- cnc cne cng cni cnn cno cnp cnr cns co- coc coe cog coi cok con coo cop cor cos cpc cpe cpg cpi cpk cpn cpo cpp cpr cps crc cre crg cri crk crn cro crp crr crs csc cse csg csi csk csn cso csp csr css ec- ecc ece ecg eci eck ecn eco ecr ecs eec eee eeg eek een eeo eep eer ees egc ege egg egi egn ego egp egr egs eic eie eig eii eik ein eio eip eir eis ekc eke ekg eki eko ekp ekr eks en- enc ene eng eni enk enn eno enp enr ens eo- eoc eoe eog eoi eok eon eoo eop eor eos ep- epc epe epg epi epn epo epp epr eps erc ere erg eri erk ern ero erp err ers es- esc ese esg esi esk esn eso esp esr ess g-p gcc gce gcg gci gck gcn gco gcp gcr gcs ge- gec gee geg gei gek gen geo gep ger ges ggc ggg ggi ggn ggo ggp ggr ggs gic gie gig gii gik gin gio gip gir gis gkn gko gkp gks gnc gne gni gnn gno gnp gnr gns goc goe gog goi gok gon goo gop gor gos gpc gpe gpg gpi gpk gpn gpo gpp gpr gps grc gre grg gri grk grn gro grp grr grs gsc gse gsg gsi gsk gsn gso gsp gsr gss icc ice icg ici ick icn ico icp icr ics ie- iec iee ieg iei iek ien iep ier ies igc ige igg igi igk ign igo igp igr igs iic iie iii iin iio iip iir iis ikc ike iki ikk iko ikr iks in- inc ine ing ini ink inn ino inp inr ins io- ioc ioe iog ioi ion ioo iop ior ios ipc ipe ipg ipi ipn ipo ipp ipr ips ir- irc ire irg iri irk irn iro irp irr irs is- isc ise isg isi isk isn iso isp isr iss kcc kce kcg kci kck kcn kcp kcr kcs ke- kec kee keg kei kek ken keo kep ker kes kgc kgi kgo kgp kgs kic kie kig kii kik kin kio kip kir kis kkc kke kki kkk kkn kkp kkr kks kn- knc kne kng kni knk knn kno knp knr koc koe kog koi kok kon koo kop kor kos kpc kpe kpi kpk kpn kpo kpp kpr kps krc krg kri krk krn kro krp krr krs ksc kse ksg ksi ksk ksn kso ksp ksr kss n-i ncc nce ncg nci nck ncn nco ncp ncr ncs ne- nec nee neg nei nek nen neo nep ner nes ngc nge ngg ngi ngk ngn ngo ngp ngs nic nie nig nii nik nin nio nip nir nis nkc nke nki nkk nkn nko nkp nkr nks nnc nne nng nni nnk nnn nno nnp nns no- noc noe nog noi nok non noo nop nor nos npc npe npg npi npn npo npp npr nps nrc nre nrg nri nrk nrn nro nrp nrr nrs nsc nse nsg nsi nsk nsn nso nsp nsr nss o-i oc- occ ocg oci ock ocn oco ocp ocr ocs oec oee oeg oei oen oeo oep oer oes ogc oge ogg ogi ogn ogo ogp ogs oic oie oii oik oin oio oip oir ois okc oke okg oki okk oko okp okr oks on- onc one ong oni onk onn ono onp onr ons oo- ooc oog ooi ook oon ooo oop oor oos op- opc ope opg opi opk opn opo opp opr ops or- orc ore org ori ork orn oro orp orr ors os- osc ose osg osi osk osn oso osp osr oss p-p pcc pce pcg pci pck pcn pco pcp pcr pcs pec pee peg pei pek pen peo pep per pes pgc pge pgg pgi pgk pgn pgo pgp pgr pgs pic pie pig pii pik pin pio pip pir pis pkc pke pkg pki pkn pko pkp pkr pks pn- pnc pne png pni pnk pnn pno pnp pnr pns poc poe pog poi pok pon poo pop por pos ppc ppe ppg ppi ppk ppn ppo ppp ppr pps prc pre prg pri prk prn pro prp prr prs ps- psc pse psg psi psk psn pso psp psr pss rcc rce rcg rci rcn rco rcp rcr rcs re- rec ree reg rei rek ren reo rep rer res rgc rge rgg rgi rgk rgn rgo rgp rgr rgs ric rie rig rii rik rin rio rip rir ris rkc rke rkg rkk rko rkp rks rnc rng rni rnn rno rnp rnr rns roc roe rog roi rok ron roo rop ror ros rpc rpe rpg rpi rpk rpn rpo rpp rpr rps rrc rrg rri rrk rrn rrp rrr rrs rsc rse rsg rsi rsk rsn rso rsp rsr rss scc sce scg sci sck scn sco scp scr scs se- sec see seg sei sek sen seo sep ser ses sgc sge sgg sgi sgk sgn sgo sgp sgr sgs sic sie sig sii sik sin sio sip sir sis sk- skc ske skg ski skk sko skp skr sks snc sne sng sni snk snn sno snp snr sns soc soe sog soi sok son soo sop sor sos spc spe spg spi spk spn spo spp spr sps sr- src sre srg sri srk srn sro srp srr srs ss- ssc sse ssg ssi ssk ssn sso ssp ssr sss