-er -ic c-- ccc cce ccf cci cco ccr ccv ce- cec cee cef cei ceo cer cev cfc cfe cff cfi cfo cfr cfv ci- cic cie cif cii cio cir civ co- coc coe cof coi coo cor cov crc cre crf cri cro crr crv cvc cve cvf cvi cvo cvr cvv ec- ecc ece ecf eci eco ecr ecv eec eee eef eeo eer eev ef- efc efe eff efi efo efr eic eie eif eii eio eir eiv eo- eoc eoe eof eoi eoo eor erc ere erf eri ero err erv evc eve evf evi evo evr evv fcc fce fcf fci fco fcr fcv fec fee fef fei feo fer fev ffc ffe fff ffi ffo ffr ffv fic fie fif fii fir foc foe fof foi foo for frc fre frf fri fro frr fvc i-f i-v icc ice icf ici ico icr icv ie- iec iee ief iei ier iev ifc ife iff ifi ifo ifr iic iie iif iii iio iir io- ioc ioe iof ioi ioo ior iov ir- irc ire irf iri iro irr irv ivc ive ivf ivi ivo ivr ivv o-i oc- occ ocf oci oco ocr ocv oec oee oef oei oeo oer of- ofc ofe off ofi ofo ofr ofv oic oie oif oii oio oir oiv oo- ooc oof ooi ooo oor oov or- orc ore orf ori oro orr orv ov- ovc ove ovf ovi ovo ovv rcc rce rcf rci rco rcr rcv re- rec ree ref rei reo rer rev rfc rfe rff rfi rfo rfr rfv ric rie rif rii rio rir riv roc roe rof roi roo ror rov rrc rrf rri rrr rvc rve rvf rvi rvo rvr rvv v-e vcc vce vcf vci vco vcr vec vee vef vei veo ver vfc vff vfi vfr vfv vi- vic vie vif vii vio vir viv voc voe vof voi voo vor vov vrc vre vrf vri vrr vvc vvi vvo vvr vvv