c-- ccc ccf ccn ccs cct ccu cfc cff cfn cfs cft cfu cn- cnc cnf cnn cns cnt cnu csc csf csn css cst csu ctc ctf ctn cts ctt ctu cuc cuf cun cus cut cuu fcc fcf fcn fcs fct fcu ffc fff ffn ffs fft ffu fnc fnf fnn fns fnt fnu fsc fsf fsn fss fst fsu ftc ftf ftn fts ftt ftu fuf fun fus fut fuu ncc ncf ncn ncs nct ncu nfc nff nfn nfs nft nfu nnc nnf nnn nns nnt nnu nsc nsf nsn nss nst nsu ntc ntf ntn nts ntt ntu nuc nun nus nut nuu scc scf scn scs sct scu sfc sff sfn sfs sft sfu snc snf snn sns snt snu ss- ssc ssf ssn sss sst ssu stc stf stn sts stt stu suc suf sun sus sut suu tcc tcf tcn tcs tct tcu tfc tff tfn tfs tft tfu tnc tnf tnn tns tnt tsc tsf tsn tss tst tsu ttc ttf ttn tts ttt ttu tuc tuf tun tus tut tuu ucc ucf ucn ucs uct ucu ufc uff ufn ufs uft ufu un- unc unf unn uns unt unu usc usf usn uss ust usu utc utf utn uts utt utu uuc uun uus uut uuu