c-- ccc cce ccf ccn ccs cct ccu ce- cec cee cef cen ces cet ceu cfc cfe cff cfn cfs cft cfu cn- cnc cne cnf cnn cns cnt cnu csc cse csf csn css cst csu ctc cte ctf ctn cts ctt ctu cuc cue cuf cun cus cut cuu ec- ecc ece ecf ecn ecs ect ecu eec eee eef een ees eet ef- efc efe eff efs eft en- enc ene enf enn ens ent enu es- esc ese esf esn ess est esu etc ete etf etn ets ett etu eu- euc eue euf eun eus eut fcc fce fcf fcn fcs fct fcu fec fee fef fen fes fet feu ffc ffe fff ffn ffs fft ffu fnc fne fnf fnn fns fnt fnu fsc fse fsf fsn fss fst fsu ftc fte ftf ftn fts ftt ftu fue fuf fun fus fut fuu ncc nce ncf ncn ncs nct ncu ne- nec nee nef nen nes net neu nfc nfe nff nfn nfs nft nfu nnc nne nnf nnn nns nnt nnu nsc nse nsf nsn nss nst nsu ntc nte ntf ntn nts ntt ntu nuc nue nun nus nut nuu scc sce scf scn scs sct scu se- sec see sef sen ses set seu sfc sfe sff sfn sfs sft sfu snc sne snf snn sns snt snu ss- ssc sse ssf ssn sss sst ssu stc ste stf stn sts stt stu suc sue suf sun sus sut suu tcc tce tcf tcn tcs tct tcu te- tec tee tef ten tes tet teu tfc tfe tff tfn tfs tft tfu tnc tne tnf tnn tns tnt tsc tse tsf tsn tss tst tsu ttc tte ttf ttn tts ttt ttu tuc tue tuf tun tus tut tuu ucc uce ucf ucn ucs uct ucu uec uee uef uen ues uet ufc ufe uff ufn ufs uft ufu un- unc une unf unn uns unt unu usc use usf usn uss ust usu utc ute utf utn uts utt utu uuc uue uun uus uut uuu