-er -ic c-- ccc cce ccg cci ccn cco ccr ccs ce- cec cee ceg cei cen ceo cer ces cgc cge cgg cgi cgn cgo cgr cgs ci- cic cie cig cii cin cio cir cis cn- cnc cne cng cni cnn cno cnr cns co- coc coe cog coi con coo cor cos crc cre crg cri crn cro crr crs csc cse csg csi csn cso csr css ec- ecc ece ecg eci ecn eco ecr ecs eec eee eeg een eeo eer ees egc ege egg egi egn ego egr egs eic eie eig eii ein eio eir eis en- enc ene eng eni enn eno enr ens eo- eoc eoe eog eoi eon eoo eor eos erc ere erg eri ern ero err ers es- esc ese esg esi esn eso esr ess gcc gce gcg gci gcn gco gcr gcs ge- gec gee geg gei gen geo ger ges ggc ggg ggi ggn ggo ggr ggs gic gie gig gii gin gio gir gis gnc gne gni gnn gno gnr gns goc goe gog goi gon goo gor gos grc gre grg gri grn gro grr grs gsc gse gsg gsi gsn gso gsr gss icc ice icg ici icn ico icr ics ie- iec iee ieg iei ien ier ies igc ige igg igi ign igo igr igs iic iie iii iin iio iir iis in- inc ine ing ini inn ino inr ins io- ioc ioe iog ioi ion ioo ior ios ir- irc ire irg iri irn iro irr irs is- isc ise isg isi isn iso isr iss n-i ncc nce ncg nci ncn nco ncr ncs ne- nec nee neg nei nen neo ner nes ngc nge ngg ngi ngn ngo ngs nic nie nig nii nin nio nir nis nnc nne nng nni nnn nno nns no- noc noe nog noi non noo nor nos nrc nre nrg nri nrn nro nrr nrs nsc nse nsg nsi nsn nso nsr nss o-i oc- occ ocg oci ocn oco ocr ocs oec oee oeg oei oen oeo oer oes ogc oge ogg ogi ogn ogo ogs oic oie oii oin oio oir ois on- onc one ong oni onn ono onr ons oo- ooc oog ooi oon ooo oor oos or- orc ore org ori orn oro orr ors os- osc ose osg osi osn oso osr oss rcc rce rcg rci rcn rco rcr rcs re- rec ree reg rei ren reo rer res rgc rge rgg rgi rgn rgo rgr rgs ric rie rig rii rin rio rir ris rnc rng rni rnn rno rnr rns roc roe rog roi ron roo ror ros rrc rrg rri rrn rrr rrs rsc rse rsg rsi rsn rso rsr rss scc sce scg sci scn sco scr scs se- sec see seg sei sen seo ser ses sgc sge sgg sgi sgn sgo sgr sgs sic sie sig sii sin sio sir sis snc sne sng sni snn sno snr sns soc soe sog soi son soo sor sos sr- src sre srg sri srn sro srr srs ss- ssc sse ssg ssi ssn sso ssr sss