c-- ccc cce cco ccs cct ccu ce- cec cee ceo ces cet ceu co- coc coe coo cos cot cou csc cse cso css cst csu ctc cte cto cts ctt ctu cuc cue cuo cus cut cuu ec- ecc ece eco ecs ect ecu eec eee eeo ees eet eo- eoc eoe eoo eos eot eou es- esc ese eso ess est esu etc ete eto ets ett etu eu- euc eue eus eut oc- occ oco ocs oct ocu oec oee oeo oes oet oo- ooc ooo oos oot os- osc ose oso oss ost osu ot- otc ote oto ots ott otu ou- ouc oue ouo ous out scc sce sco scs sct scu se- sec see seo ses set seu soc soe soo sos sot sou ss- ssc sse sso sss sst ssu stc ste sto sts stt stu suc sue suo sus sut suu tcc tce tco tcs tct tcu te- tec tee teo tes tet teu to- toc toe too tos tot tou tsc tse tso tss tst tsu ttc tte tto tts ttt ttu tuc tue tuo tus tut tuu ucc uce uco ucs uct ucu uec uee ues uet uoc uoe uoo uos uot usc use uso uss ust usu utc ute uto uts utt utu uuc uue uus uut uuu