-er c-- ccc cce ccf cck ccl ccn ccr ccs ccu ce- cec cee cef cek cel cen cer ces ceu cfc cfe cff cfk cfl cfn cfr cfs cfu ckc cks cl- clc cle clf clk cll cln clr cls clu cn- cnc cne cnf cnl cnn cnr cns cnu crc cre crf crk crl crn crr crs cru csc cse csf csk csl csn csr css csu cuc cue cuf cuk cul cun cur cus cuu ec- ecc ece ecf eck ecl ecn ecr ecs ecu eec eee eef eek eel een eer ees ef- efc efe eff efl efr efs ekc eke ekf ekl ekr eks eku elc ele elf elk ell eln elr els elu en- enc ene enf enk enl enn enr ens enu erc ere erf erk erl ern err ers eru es- esc ese esf esk esl esn esr ess esu eu- euc eue euf eul eun eur eus fcc fce fcf fck fcl fcn fcr fcs fcu fec fee fef fek fel fen fer fes feu ffc ffe fff ffk ffl ffn ffr ffs ffu fkc fkf fkk fkl flc fle flf fll fln flr fls flu fnc fne fnf fnk fnl fnn fnr fns fnu frc fre frf frk frl frn frr frs fru fsc fse fsf fsk fsl fsn fsr fss fsu fue fuf fuk ful fun fur fus fuu kcc kce kck kcl kcn kcr kcs kcu ke- kec kee kef kek kel ken ker kes kfc kff kfs kfu kkc kke kkk kkl kkn kkr kks kku kl- klc klf klr kls klu kn- knc kne knf knk knl knn knr knu krc krf krk krl krn krr krs kru ksc kse ksf ksk ksl ksn ksr kss ksu kuc kue kuk kul kun kur kus kuu lcc lce lcf lck lcl lcn lcr lcs lcu lec lee lef lek lel len ler les leu lfc lfe lff lfk lfl lfn lfr lfs lfu lkl lkr lks llc lle llf llk lll lln llr lls llu lnc lne lnk lnl lnn lnr lns lnu lrc lrf lrk lrn lrr lrs lru lsc lse lsf lsk lsl lsn lsr lss lsu luc lue luf luk lul lun lur lus luu ncc nce ncf nck ncl ncn ncr ncs ncu ne- nec nee nef nek nel nen ner nes neu nfc nfe nff nfk nfl nfn nfr nfs nfu nkc nke nkf nkk nkn nkr nks nku nlc nle nlf nlk nll nln nlr nls nlu nnc nne nnf nnk nnl nnn nns nnu nrc nre nrf nrk nrl nrn nrr nrs nru nsc nse nsf nsk nsl nsn nsr nss nsu nuc nue nuk nul nun nur nus nuu rcc rce rcf rcl rcn rcr rcs rcu re- rec ree ref rek rel ren rer res reu rfc rfe rff rfk rfl rfn rfr rfs rfu rkc rke rkf rkk rks rku rlc rle rlf rll rln rlr rls rlu rnc rnn rnr rns rnu rrc rrf rrk rrl rrn rrr rrs rru rsc rse rsf rsk rsl rsn rsr rss rsu ruc rue ruf ruk run rur rus ruu scc sce scf sck scl scn scr scs scu se- sec see sef sek sel sen ser ses seu sfc sfe sff sfk sfl sfn sfr sfs sfu sk- skc ske skf skk skl skr sks sku slc sle slf slk sll sln slr sls slu snc sne snf snk snl snn snr sns snu sr- src sre srf srk srl srn srr srs ss- ssc sse ssf ssk ssl ssn ssr sss ssu suc sue suf suk sul sun sur sus suu ucc uce ucf uck ucl ucn ucr ucs ucu uec uee uef uel uen uer ues ufc ufe uff ufl ufn ufr ufs ufu ukc uke ukf ukk ukl ukn ukr uku ulc ule ulf ulk ull uln ulr uls ulu un- unc une unf unk unl unn unr uns unu ur- urc ure urf urk url urn urr urs uru usc use usf usk usl usn usr uss usu uuc uue uun uur uus uuu