c-- ccc cce cck ccl ccs cct ccu ce- cec cee cek cel ces cet ceu ckc cks ckt cl- clc cle clk cll cls clt clu csc cse csk csl css cst csu ctc cte ctk ctl cts ctt ctu cuc cue cuk cul cus cut cuu ec- ecc ece eck ecl ecs ect ecu eec eee eek eel ees eet ekc eke ekl eks ekt eku elc ele elk ell els elt elu es- esc ese esk esl ess est esu etc ete etk etl ets ett etu eu- euc eue eul eus eut k-t kcc kce kck kcl kcs kct kcu ke- kec kee kek kel kes ket kkc kke kkk kkl kks kkt kku kl- klc kls klt klu ksc kse ksk ksl kss kst ksu ktc kte ktk ktl kts ktt ktu kuc kue kuk kul kus kut kuu lcc lce lck lcl lcs lct lcu lec lee lek lel les let leu lkl lks lkt llc lle llk lll lls llt llu lsc lse lsk lsl lss lst lsu ltc lte ltk ltl lts ltt ltu luc lue luk lul lus lut luu scc sce sck scl scs sct scu se- sec see sek sel ses set seu sk- skc ske skk skl sks skt sku slc sle slk sll sls slt slu ss- ssc sse ssk ssl sss sst ssu stc ste stk stl sts stt stu suc sue suk sul sus sut suu tcc tce tck tcl tcs tct tcu te- tec tee tek tel tes tet teu tkc tke tkk tkl tks tkt tlc tle tlk tll tls tlt tlu tsc tse tsk tsl tss tst tsu ttc tte ttk ttl tts ttt ttu tuc tue tuk tul tus tut tuu ucc uce uck ucl ucs uct ucu uec uee uel ues uet ukc uke ukk ukl uku ulc ule ulk ull uls ult ulu usc use usk usl uss ust usu utc ute utk utl uts utt utu uuc uue uus uut uuu