c-- ccc cce ccl ccn ccs ccu ce- cec cee cel cen ces ceu cl- clc cle cll cln cls clu cn- cnc cne cnl cnn cns cnu csc cse csl csn css csu cuc cue cul cun cus cuu ec- ecc ece ecl ecn ecs ecu eec eee eel een ees elc ele ell eln els elu en- enc ene enl enn ens enu es- esc ese esl esn ess esu eu- euc eue eul eun eus lcc lce lcl lcn lcs lcu lec lee lel len les leu llc lle lll lln lls llu lnc lne lnl lnn lns lnu lsc lse lsl lsn lss lsu luc lue lul lun lus luu ncc nce ncl ncn ncs ncu ne- nec nee nel nen nes neu nlc nle nll nln nls nlu nnc nne nnl nnn nns nnu nsc nse nsl nsn nss nsu nuc nue nul nun nus nuu scc sce scl scn scs scu se- sec see sel sen ses seu slc sle sll sln sls slu snc sne snl snn sns snu ss- ssc sse ssl ssn sss ssu suc sue sul sun sus suu ucc uce ucl ucn ucs ucu uec uee uel uen ues ulc ule ull uln uls ulu un- unc une unl unn uns unu usc use usl usn uss usu uuc uue uun uus uuu