-er c-- ccc cce ccf ccn ccr ccs ccu ce- cec cee cef cen cer ces ceu cfc cfe cff cfn cfr cfs cfu cn- cnc cne cnf cnn cnr cns cnu crc cre crf crn crr crs cru csc cse csf csn csr css csu cuc cue cuf cun cur cus cuu ec- ecc ece ecf ecn ecr ecs ecu eec eee eef een eer ees ef- efc efe eff efr efs en- enc ene enf enn enr ens enu erc ere erf ern err ers eru es- esc ese esf esn esr ess esu eu- euc eue euf eun eur eus fcc fce fcf fcn fcr fcs fcu fec fee fef fen fer fes feu ffc ffe fff ffn ffr ffs ffu fnc fne fnf fnn fnr fns fnu frc fre frf frn frr frs fru fsc fse fsf fsn fsr fss fsu fue fuf fun fur fus fuu ncc nce ncf ncn ncr ncs ncu ne- nec nee nef nen ner nes neu nfc nfe nff nfn nfr nfs nfu nnc nne nnf nnn nns nnu nrc nre nrf nrn nrr nrs nru nsc nse nsf nsn nsr nss nsu nuc nue nun nur nus nuu rcc rce rcf rcn rcr rcs rcu re- rec ree ref ren rer res reu rfc rfe rff rfn rfr rfs rfu rnc rnn rnr rns rnu rrc rrf rrn rrr rrs rru rsc rse rsf rsn rsr rss rsu ruc rue ruf run rur rus ruu scc sce scf scn scr scs scu se- sec see sef sen ser ses seu sfc sfe sff sfn sfr sfs sfu snc sne snf snn snr sns snu sr- src sre srf srn srr srs ss- ssc sse ssf ssn ssr sss ssu suc sue suf sun sur sus suu ucc uce ucf ucn ucr ucs ucu uec uee uef uen uer ues ufc ufe uff ufn ufr ufs ufu un- unc une unf unn unr uns unu ur- urc ure urf urn urr urs uru usc use usf usn usr uss usu uuc uue uun uur uus uuu