-er -ic c-- ccc cce ccg cch cci cco ccp ccr ccs ce- cec cee ceg ceh cei ceo cep cer ces cgc cge cgg cgh cgi cgo cgp cgr cgs ch- chc che chg chh chi cho chp chr chs ci- cic cie cig cih cii cio cip cir cis co- coc coe cog coh coi coo cop cor cos cpc cpe cpg cph cpi cpo cpp cpr cps crc cre crg crh cri cro crp crr crs csc cse csg csh csi cso csp csr css ec- ecc ece ecg ech eci eco ecr ecs eec eee eeg eeo eep eer ees egc ege egg egh egi ego egp egr egs ehc ehe ehg ehh ehi eho ehp ehr ehs eic eie eig eii eio eip eir eis eo- eoc eoe eog eoh eoi eoo eop eor eos ep- epc epe epg eph epi epo epp epr eps erc ere erg erh eri ero erp err ers es- esc ese esg esh esi eso esp esr ess g-p gcc gce gcg gch gci gco gcp gcr gcs ge- gec gee geg geh gei geo gep ger ges ggc ggg ggh ggi ggo ggp ggr ggs ghc ghe ghg ghh ghi gho ghp ghr ghs gic gie gig gih gii gio gip gir gis goc goe gog goh goi goo gop gor gos gpc gpe gpg gph gpi gpo gpp gpr gps grc gre grg grh gri gro grp grr grs gsc gse gsg gsi gso gsp gsr gss h-i hcc hce hcg hch hci hco hcp hcr hcs he- hec hee heg heh hei heo hep her hes hgc hge hgg hgh hgi hgo hgp hgr hgs hhc hhe hhg hhh hhi hho hhp hhr hhs hic hie hig hih hii hio hip hir his hoc hoe hog hoh hoi hoo hop hor hos hpc hpe hpg hph hpi hpo hpp hpr hps hr- hrc hre hrg hrh hri hro hrp hrr hrs hsc hse hsg hsh hsi hsp hsr hss icc ice icg ich ici ico icp icr ics ie- iec iee ieg iei iep ier ies igc ige igg igh igi igo igp igr igs ihc ihe ihg ihh ihi iho ihp ihr ihs iic iie iih iii iio iip iir iis io- ioc ioe iog ioh ioi ioo iop ior ios ipc ipe ipg ipi ipo ipp ipr ips ir- irc ire irg iri iro irp irr irs is- isc ise isg ish isi iso isp isr iss o-i oc- occ ocg och oci oco ocp ocr ocs oec oee oeg oeh oei oeo oep oer oes ogc oge ogg ogh ogi ogo ogp ogs ohc ohe ohg ohh ohi oho ohp ohr ohs oic oie oii oio oip oir ois oo- ooc oog ooh ooi ooo oop oor oos op- opc ope opg oph opi opo opp opr ops or- orc ore org orh ori oro orp orr ors os- osc ose osg osh osi oso osp osr oss p-p pcc pce pcg pch pci pco pcp pcr pcs pec pee peg peh pei peo pep per pes pgc pge pgg pgh pgi pgo pgp pgr pgs phc phe phg phi pho php phr phs pic pie pig pih pii pio pip pir pis poc poe pog poh poi poo pop por pos ppc ppe ppg pph ppi ppo ppp ppr pps prc pre prg prh pri pro prp prr prs ps- psc pse psg psh psi pso psp psr pss rcc rce rcg rch rci rco rcp rcr rcs re- rec ree reg reh rei reo rep rer res rgc rge rgg rgh rgi rgo rgp rgr rgs rh- rhc rhe rhg rhh rhi rho rhp rhr rhs ric rie rig rih rii rio rip rir ris roc roe rog roh roi roo rop ror ros rpc rpe rpg rph rpi rpo rpp rpr rps rrc rrg rrh rri rrp rrr rrs rsc rse rsg rsh rsi rso rsp rsr rss scc sce scg sch sci sco scp scr scs se- sec see seg seh sei seo sep ser ses sgc sge sgg sgh sgi sgo sgp sgr sgs sh- shc she shg shh shi sho shp shr shs sic sie sig sih sii sio sip sir sis soc soe sog soh soi soo sop sor sos spc spe spg sph spi spo spp spr sps sr- src sre srg srh sri sro srp srr srs ss- ssc sse ssg ssh ssi sso ssp ssr sss