c-- ccc cce ccf cck ccs cct ccu ce- cec cee cef cek ces cet ceu cfc cfe cff cfk cfs cft cfu ckc cks ckt csc cse csf csk css cst csu ctc cte ctf ctk cts ctt ctu cuc cue cuf cuk cus cut cuu ec- ecc ece ecf eck ecs ect ecu eec eee eef eek ees eet ef- efc efe eff efs eft ekc eke ekf eks ekt eku es- esc ese esf esk ess est esu etc ete etf etk ets ett etu eu- euc eue euf eus eut fcc fce fcf fck fcs fct fcu fec fee fef fek fes fet feu ffc ffe fff ffk ffs fft ffu fkc fkf fkk fkt fsc fse fsf fsk fss fst fsu ftc fte ftf ftk fts ftt ftu fue fuf fuk fus fut fuu k-t kcc kce kck kcs kct kcu ke- kec kee kef kek kes ket kfc kff kfs kfu kkc kke kkk kks kkt kku ksc kse ksf ksk kss kst ksu ktc kte ktf ktk kts ktt ktu kuc kue kuk kus kut kuu scc sce scf sck scs sct scu se- sec see sef sek ses set seu sfc sfe sff sfk sfs sft sfu sk- skc ske skf skk sks skt sku ss- ssc sse ssf ssk sss sst ssu stc ste stf stk sts stt stu suc sue suf suk sus sut suu tcc tce tcf tck tcs tct tcu te- tec tee tef tek tes tet teu tfc tfe tff tfk tfs tft tfu tkc tke tkk tks tkt tsc tse tsf tsk tss tst tsu ttc tte ttf ttk tts ttt ttu tuc tue tuf tuk tus tut tuu ucc uce ucf uck ucs uct ucu uec uee uef ues uet ufc ufe uff ufs uft ufu ukc uke ukf ukk uku usc use usf usk uss ust usu utc ute utf utk uts utt utu uuc uue uus uut uuu