-er -ic c-- ccc cce ccf cci cco ccr ccs ccu ccv ce- cec cee cef cei ceo cer ces ceu cev cfc cfe cff cfi cfo cfr cfs cfu cfv ci- cic cie cif cii cio cir cis ciu civ co- coc coe cof coi coo cor cos cou cov crc cre crf cri cro crr crs cru crv csc cse csf csi cso csr css csu csv cuc cue cuf cui cuo cur cus cuu cuv cvc cve cvf cvi cvo cvr cvs cvu cvv ec- ecc ece ecf eci eco ecr ecs ecu ecv eec eee eef eeo eer ees eev ef- efc efe eff efi efo efr efs eic eie eif eii eio eir eis eiu eiv eo- eoc eoe eof eoi eoo eor eos eou erc ere erf eri ero err ers eru erv es- esc ese esf esi eso esr ess esu esv eu- euc eue euf eui eur eus euv evc eve evf evi evo evr evs evv fcc fce fcf fci fco fcr fcs fcu fcv fec fee fef fei feo fer fes feu fev ffc ffe fff ffi ffo ffr ffs ffu ffv fic fie fif fii fir fis fiu foc foe fof foi foo for fos fou frc fre frf fri fro frr frs fru fsc fse fsf fsi fso fsr fss fsu fsv fue fuf fui fuo fur fus fuu fuv fvc i-f i-v icc ice icf ici ico icr ics icu icv ie- iec iee ief iei ier ies iev ifc ife iff ifi ifo ifr ifs ifu iic iie iif iii iio iir iis iiu io- ioc ioe iof ioi ioo ior ios iou iov ir- irc ire irf iri iro irr irs iru irv is- isc ise isf isi iso isr iss isu isv iu- iuc iue iui iur ius ivc ive ivf ivi ivo ivr ivs ivu ivv o-i oc- occ ocf oci oco ocr ocs ocu ocv oec oee oef oei oeo oer oes of- ofc ofe off ofi ofo ofr ofs ofu ofv oic oie oif oii oio oir ois oiu oiv oo- ooc oof ooi ooo oor oos oov or- orc ore orf ori oro orr ors oru orv os- osc ose osf osi oso osr oss osu osv ou- ouc oue ouf oui ouo our ous ov- ovc ove ovf ovi ovo ovs ovv rcc rce rcf rci rco rcr rcs rcu rcv re- rec ree ref rei reo rer res reu rev rfc rfe rff rfi rfo rfr rfs rfu rfv ric rie rif rii rio rir ris riv roc roe rof roi roo ror ros rou rov rrc rrf rri rrr rrs rru rsc rse rsf rsi rso rsr rss rsu rsv ruc rue ruf rui ruo rur rus ruu ruv rvc rve rvf rvi rvo rvr rvs rvu rvv scc sce scf sci sco scr scs scu scv se- sec see sef sei seo ser ses seu sev sfc sfe sff sfi sfo sfr sfs sfu sfv sic sie sif sii sio sir sis siu siv soc soe sof soi soo sor sos sou sov sr- src sre srf sri sro srr srs srv ss- ssc sse ssf ssi sso ssr sss ssu ssv suc sue suf sui suo sur sus suu suv svc sve svf svi svo svr svs svu svv ucc uce ucf uci uco ucr ucs ucu ucv uec uee uef uei uer ues ufc ufe uff ufi ufo ufr ufs ufu ufv uic uie uif uii uio uir uis uiu uoc uoe uoo uor uos ur- urc ure urf uri uro urr urs uru usc use usf usi uso usr uss usu usv uuc uue uur uus uuu uvc uve uvf uvo uvs uvu uvv v-e vcc vce vcf vci vco vcr vcs vcu vec vee vef vei veo ver ves veu vfc vff vfi vfr vfs vfu vfv vi- vic vie vif vii vio vir vis viu viv voc voe vof voi voo vor vos vou vov vrc vre vrf vri vrr vrs vru vsc vse vsf vsi vso vsr vss vsu vsv vue vur vus vuv vvc vvi vvo vvr vvs vvv