c-- ccc cce ccl ccs cct ccu ce- cec cee cel ces cet ceu cl- clc cle cll cls clt clu csc cse csl css cst csu ctc cte ctl cts ctt ctu cuc cue cul cus cut cuu ec- ecc ece ecl ecs ect ecu eec eee eel ees eet elc ele ell els elt elu es- esc ese esl ess est esu etc ete etl ets ett etu eu- euc eue eul eus eut lcc lce lcl lcs lct lcu lec lee lel les let leu llc lle lll lls llt llu lsc lse lsl lss lst lsu ltc lte ltl lts ltt ltu luc lue lul lus lut luu scc sce scl scs sct scu se- sec see sel ses set seu slc sle sll sls slt slu ss- ssc sse ssl sss sst ssu stc ste stl sts stt stu suc sue sul sus sut suu tcc tce tcl tcs tct tcu te- tec tee tel tes tet teu tlc tle tll tls tlt tlu tsc tse tsl tss tst tsu ttc tte ttl tts ttt ttu tuc tue tul tus tut tuu ucc uce ucl ucs uct ucu uec uee uel ues uet ulc ule ull uls ult ulu usc use usl uss ust usu utc ute utl uts utt utu uuc uue uus uut uuu