c-- ccc ccd cce cco ccs cct ccu cdc cdd cde cdo cds cdt cdu ce- cec ced cee ceo ces cet ceu co- coc cod coe coo cos cot cou csc csd cse cso css cst csu ctc ctd cte cto cts ctt ctu cuc cud cue cuo cus cut cuu dcc dcd dce dco dcs dct dcu ddc ddd dde ddo dds ddt ddu de- dec ded dee deo des det deu doc dod doe doo dos dot dou dsc dsd dse dso dss dst dsu dtc dtd dte dto dts dtt dtu duc dud due duo dus dut ec- ecc ecd ece eco ecs ect ecu ed- edc edd ede edo eds edt edu eec eed eee eeo ees eet eo- eoc eod eoe eoo eos eot eou es- esc esd ese eso ess est esu etc etd ete eto ets ett etu eu- euc eud eue eus eut oc- occ ocd oco ocs oct ocu odc odd ode odo ods odt odu oec oed oee oeo oes oet oo- ooc ood ooo oos oot os- osc osd ose oso oss ost osu ot- otc otd ote oto ots ott otu ou- ouc oud oue ouo ous out scc scd sce sco scs sct scu sdc sdd sde sdo sds sdt sdu se- sec sed see seo ses set seu soc sod soe soo sos sot sou ss- ssc ssd sse sso sss sst ssu stc std ste sto sts stt stu suc sud sue suo sus sut suu tcc tcd tce tco tcs tct tcu tdc tdd tde tdo tds tdt tdu te- tec ted tee teo tes tet teu to- toc tod toe too tos tot tou tsc tsd tse tso tss tst tsu ttc ttd tte tto tts ttt ttu tuc tud tue tuo tus tut tuu ucc ucd uce uco ucs uct ucu udc udd ude udo uds udt udu uec ued uee ues uet uoc uod uoe uoo uos uot usc usd use uso uss ust usu utc utd ute uto uts utt utu uuc uue uus uut uuu