-er -ic c-- ccc cce cch cci cco ccr ccs ce- cec cee ceh cei ceo cer ces ch- chc che chh chi cho chr chs ci- cic cie cih cii cio cir cis co- coc coe coh coi coo cor cos crc cre crh cri cro crr crs csc cse csh csi cso csr css ec- ecc ece ech eci eco ecr ecs eec eee eeo eer ees ehc ehe ehh ehi eho ehr ehs eic eie eii eio eir eis eo- eoc eoe eoh eoi eoo eor eos erc ere erh eri ero err ers es- esc ese esh esi eso esr ess h-i hcc hce hch hci hco hcr hcs he- hec hee heh hei heo her hes hhc hhe hhh hhi hho hhr hhs hic hie hih hii hio hir his hoc hoe hoh hoi hoo hor hos hr- hrc hre hrh hri hro hrr hrs hsc hse hsh hsi hsr hss icc ice ich ici ico icr ics ie- iec iee iei ier ies ihc ihe ihh ihi iho ihr ihs iic iie iih iii iio iir iis io- ioc ioe ioh ioi ioo ior ios ir- irc ire iri iro irr irs is- isc ise ish isi iso isr iss o-i oc- occ och oci oco ocr ocs oec oee oeh oei oeo oer oes ohc ohe ohh ohi oho ohr ohs oic oie oii oio oir ois oo- ooc ooh ooi ooo oor oos or- orc ore orh ori oro orr ors os- osc ose osh osi oso osr oss rcc rce rch rci rco rcr rcs re- rec ree reh rei reo rer res rh- rhc rhe rhh rhi rho rhr rhs ric rie rih rii rio rir ris roc roe roh roi roo ror ros rrc rrh rri rrr rrs rsc rse rsh rsi rso rsr rss scc sce sch sci sco scr scs se- sec see seh sei seo ser ses sh- shc she shh shi sho shr shs sic sie sih sii sio sir sis soc soe soh soi soo sor sos sr- src sre srh sri sro srr srs ss- ssc sse ssh ssi sso ssr sss