c-- ccc cce ccl ccs ccu ce- cec cee cel ces ceu cl- clc cle cll cls clu csc cse csl css csu cuc cue cul cus cuu ec- ecc ece ecl ecs ecu eec eee eel ees elc ele ell els elu es- esc ese esl ess esu eu- euc eue eul eus lcc lce lcl lcs lcu lec lee lel les leu llc lle lll lls llu lsc lse lsl lss lsu luc lue lul lus luu scc sce scl scs scu se- sec see sel ses seu slc sle sll sls slu ss- ssc sse ssl sss ssu suc sue sul sus suu ucc uce ucl ucs ucu uec uee uel ues ulc ule ull uls ulu usc use usl uss usu uuc uue uus uuu