c-- ccc ccd cce ccf cco ccs cct ccu cdc cdd cde cdf cdo cds cdt cdu ce- cec ced cee cef ceo ces cet ceu cfc cfd cfe cff cfo cfs cft cfu co- coc cod coe cof coo cos cot cou csc csd cse csf cso css cst csu ctc ctd cte ctf cto cts ctt ctu cuc cud cue cuf cuo cus cut cuu dcc dcd dce dcf dco dcs dct dcu ddc ddd dde ddf ddo dds ddt ddu de- dec ded dee def deo des det deu dfc dfd dfe dff dfo dfs dft dfu doc dod doe dof doo dos dot dou dsc dsd dse dsf dso dss dst dsu dtc dtd dte dtf dto dts dtt dtu duc dud due duf duo dus dut ec- ecc ecd ece ecf eco ecs ect ecu ed- edc edd ede edf edo eds edt edu eec eed eee eef eeo ees eet ef- efc efd efe eff efo efs eft eo- eoc eod eoe eof eoo eos eot eou es- esc esd ese esf eso ess est esu etc etd ete etf eto ets ett etu eu- euc eud eue euf eus eut fcc fcd fce fcf fco fcs fct fcu fdc fdd fde fdf fdo fds fdt fdu fec fed fee fef feo fes fet feu ffc ffd ffe fff ffo ffs fft ffu foc foe fof foo fos fot fou fsc fsd fse fsf fso fss fst fsu ftc ftd fte ftf fto fts ftt ftu fud fue fuf fuo fus fut fuu oc- occ ocd ocf oco ocs oct ocu odc odd ode odf odo ods odt odu oec oed oee oef oeo oes oet of- ofc ofd ofe off ofo ofs oft ofu oo- ooc ood oof ooo oos oot os- osc osd ose osf oso oss ost osu ot- otc otd ote otf oto ots ott otu ou- ouc oud oue ouf ouo ous out scc scd sce scf sco scs sct scu sdc sdd sde sdf sdo sds sdt sdu se- sec sed see sef seo ses set seu sfc sfd sfe sff sfo sfs sft sfu soc sod soe sof soo sos sot sou ss- ssc ssd sse ssf sso sss sst ssu stc std ste stf sto sts stt stu suc sud sue suf suo sus sut suu tcc tcd tce tcf tco tcs tct tcu tdc tdd tde tdf tdo tds tdt tdu te- tec ted tee tef teo tes tet teu tfc tfd tfe tff tfo tfs tft tfu to- toc tod toe tof too tos tot tou tsc tsd tse tsf tso tss tst tsu ttc ttd tte ttf tto tts ttt ttu tuc tud tue tuf tuo tus tut tuu ucc ucd uce ucf uco ucs uct ucu udc udd ude udf udo uds udt udu uec ued uee uef ues uet ufc ufd ufe uff ufo ufs uft ufu uoc uod uoe uoo uos uot usc usd use usf uso uss ust usu utc utd ute utf uto uts utt utu uuc uue uus uut uuu