-er c-- ccc cce cch cco ccr ccs ccv ce- cec cee ceh ceo cer ces cev ch- chc che chh cho chr chs chv co- coc coe coh coo cor cos cov crc cre crh cro crr crs crv csc cse csh cso csr css csv cvc cve cvh cvo cvr cvs cvv ec- ecc ece ech eco ecr ecs ecv eec eee eeo eer ees eev ehc ehe ehh eho ehr ehs ehv eo- eoc eoe eoh eoo eor eos erc ere erh ero err ers erv es- esc ese esh eso esr ess esv evc eve evh evo evr evs evv hcc hce hch hco hcr hcs hcv he- hec hee heh heo her hes hev hhc hhe hhh hho hhr hhs hhv hoc hoe hoh hoo hor hos hov hr- hrc hre hrh hro hrr hrs hrv hsc hse hsh hsr hss hsv hv- hvc hvo hvr hvs hvv oc- occ och oco ocr ocs ocv oec oee oeh oeo oer oes ohc ohe ohh oho ohr ohs oo- ooc ooh ooo oor oos oov or- orc ore orh oro orr ors orv os- osc ose osh oso osr oss osv ov- ovc ove ovh ovo ovs ovv rcc rce rch rco rcr rcs rcv re- rec ree reh reo rer res rev rh- rhc rhe rhh rho rhr rhs rhv roc roe roh roo ror ros rov rrc rrh rrr rrs rsc rse rsh rso rsr rss rsv rvc rve rvh rvo rvr rvs rvv scc sce sch sco scr scs scv se- sec see seh seo ser ses sev sh- shc she shh sho shr shs shv soc soe soh soo sor sos sov sr- src sre srh sro srr srs srv ss- ssc sse ssh sso ssr sss ssv svc sve svo svr svs svv v-e vcc vce vch vco vcr vcs vec vee veh veo ver ves vh- vhc vhe vho vhs voc voe voh voo vor vos vov vrc vre vrh vrr vrs vsc vse vsh vso vsr vss vsv vvc vvo vvr vvs vvv