c-- ccc cce cck ccl ccn ccs cct ce- cec cee cek cel cen ces cet ckc cks ckt cl- clc cle clk cll cln cls clt cn- cnc cne cnl cnn cns cnt csc cse csk csl csn css cst ctc cte ctk ctl ctn cts ctt ec- ecc ece eck ecl ecn ecs ect eec eee eek eel een ees eet ekc eke ekl eks ekt elc ele elk ell eln els elt en- enc ene enk enl enn ens ent es- esc ese esk esl esn ess est etc ete etk etl etn ets ett k-t kcc kce kck kcl kcn kcs kct ke- kec kee kek kel ken kes ket kkc kke kkk kkl kkn kks kkt kl- klc kls klt kn- knc kne knk knl knn knt ksc kse ksk ksl ksn kss kst ktc kte ktk ktl ktn kts ktt lcc lce lck lcl lcn lcs lct lec lee lek lel len les let lkl lks lkt llc lle llk lll lln lls llt lnc lne lnk lnl lnn lns lnt lsc lse lsk lsl lsn lss lst ltc lte ltk ltl lts ltt ncc nce nck ncl ncn ncs nct ne- nec nee nek nel nen nes net nkc nke nkk nkn nks nkt nlc nle nlk nll nln nls nlt nnc nne nnk nnl nnn nns nnt nsc nse nsk nsl nsn nss nst ntc nte ntk ntn nts ntt scc sce sck scl scn scs sct se- sec see sek sel sen ses set sk- skc ske skk skl sks skt slc sle slk sll sln sls slt snc sne snk snl snn sns snt ss- ssc sse ssk ssl ssn sss sst stc ste stk stl stn sts stt tcc tce tck tcl tcn tcs tct te- tec tee tek tel ten tes tet tkc tke tkk tkl tks tkt tlc tle tlk tll tln tls tlt tnc tne tnk tnl tnn tns tnt tsc tse tsk tsl tsn tss tst ttc tte ttk ttl ttn tts ttt