-er -ic c-- ccc cce ccf cci cco ccr ccs ccv ce- cec cee cef cei ceo cer ces cev cfc cfe cff cfi cfo cfr cfs cfv ci- cic cie cif cii cio cir cis civ co- coc coe cof coi coo cor cos cov crc cre crf cri cro crr crs crv csc cse csf csi cso csr css csv cvc cve cvf cvi cvo cvr cvs cvv ec- ecc ece ecf eci eco ecr ecs ecv eec eee eef eeo eer ees eev ef- efc efe eff efi efo efr efs eic eie eif eii eio eir eis eiv eo- eoc eoe eof eoi eoo eor eos erc ere erf eri ero err ers erv es- esc ese esf esi eso esr ess esv evc eve evf evi evo evr evs evv fcc fce fcf fci fco fcr fcs fcv fec fee fef fei feo fer fes fev ffc ffe fff ffi ffo ffr ffs ffv fic fie fif fii fir fis foc foe fof foi foo for fos frc fre frf fri fro frr frs fsc fse fsf fsi fso fsr fss fsv fvc i-f i-v icc ice icf ici ico icr ics icv ie- iec iee ief iei ier ies iev ifc ife iff ifi ifo ifr ifs iic iie iif iii iio iir iis io- ioc ioe iof ioi ioo ior ios iov ir- irc ire irf iri iro irr irs irv is- isc ise isf isi iso isr iss isv ivc ive ivf ivi ivo ivr ivs ivv o-i oc- occ ocf oci oco ocr ocs ocv oec oee oef oei oeo oer oes of- ofc ofe off ofi ofo ofr ofs ofv oic oie oif oii oio oir ois oiv oo- ooc oof ooi ooo oor oos oov or- orc ore orf ori oro orr ors orv os- osc ose osf osi oso osr oss osv ov- ovc ove ovf ovi ovo ovs ovv rcc rce rcf rci rco rcr rcs rcv re- rec ree ref rei reo rer res rev rfc rfe rff rfi rfo rfr rfs rfv ric rie rif rii rio rir ris riv roc roe rof roi roo ror ros rov rrc rrf rri rrr rrs rsc rse rsf rsi rso rsr rss rsv rvc rve rvf rvi rvo rvr rvs rvv scc sce scf sci sco scr scs scv se- sec see sef sei seo ser ses sev sfc sfe sff sfi sfo sfr sfs sfv sic sie sif sii sio sir sis siv soc soe sof soi soo sor sos sov sr- src sre srf sri sro srr srs srv ss- ssc sse ssf ssi sso ssr sss ssv svc sve svf svi svo svr svs svv v-e vcc vce vcf vci vco vcr vcs vec vee vef vei veo ver ves vfc vff vfi vfr vfs vfv vi- vic vie vif vii vio vir vis viv voc voe vof voi voo vor vos vov vrc vre vrf vri vrr vrs vsc vse vsf vsi vso vsr vss vsv vvc vvi vvo vvr vvs vvv