c-- ccc cce ccf cco ccs cct ccu ce- cec cee cef ceo ces cet ceu cfc cfe cff cfo cfs cft cfu co- coc coe cof coo cos cot cou csc cse csf cso css cst csu ctc cte ctf cto cts ctt ctu cuc cue cuf cuo cus cut cuu ec- ecc ece ecf eco ecs ect ecu eec eee eef eeo ees eet ef- efc efe eff efo efs eft eo- eoc eoe eof eoo eos eot eou es- esc ese esf eso ess est esu etc ete etf eto ets ett etu eu- euc eue euf eus eut fcc fce fcf fco fcs fct fcu fec fee fef feo fes fet feu ffc ffe fff ffo ffs fft ffu foc foe fof foo fos fot fou fsc fse fsf fso fss fst fsu ftc fte ftf fto fts ftt ftu fue fuf fuo fus fut fuu oc- occ ocf oco ocs oct ocu oec oee oef oeo oes oet of- ofc ofe off ofo ofs oft ofu oo- ooc oof ooo oos oot os- osc ose osf oso oss ost osu ot- otc ote otf oto ots ott otu ou- ouc oue ouf ouo ous out scc sce scf sco scs sct scu se- sec see sef seo ses set seu sfc sfe sff sfo sfs sft sfu soc soe sof soo sos sot sou ss- ssc sse ssf sso sss sst ssu stc ste stf sto sts stt stu suc sue suf suo sus sut suu tcc tce tcf tco tcs tct tcu te- tec tee tef teo tes tet teu tfc tfe tff tfo tfs tft tfu to- toc toe tof too tos tot tou tsc tse tsf tso tss tst tsu ttc tte ttf tto tts ttt ttu tuc tue tuf tuo tus tut tuu ucc uce ucf uco ucs uct ucu uec uee uef ues uet ufc ufe uff ufo ufs uft ufu uoc uoe uoo uos uot usc use usf uso uss ust usu utc ute utf uto uts utt utu uuc uue uus uut uuu