c-- ccc ccd ccf cco ccr ccs cct ccu cdc cdd cdf cdo cdr cds cdt cdu cfc cfd cff cfo cfr cfs cft cfu co- coc cod cof coo cor cos cot cou crc crd crf cro crr crs crt cru csc csd csf cso csr css cst csu ctc ctd ctf cto ctr cts ctt ctu cuc cud cuf cuo cur cus cut cuu dcc dcd dcf dco dcr dcs dct dcu ddc ddd ddf ddo ddr dds ddt ddu dfc dfd dff dfo dfr dfs dft dfu doc dod dof doo dor dos dot dou drc drd dro drr drs drt dru dsc dsd dsf dso dsr dss dst dsu dtc dtd dtf dto dtr dts dtt dtu duc dud duf duo dur dus dut fcc fcd fcf fco fcr fcs fct fcu fdc fdd fdf fdo fdr fds fdt fdu ffc ffd fff ffo ffr ffs fft ffu foc fof foo for fos fot fou frc frd frf fro frr frs frt fru fsc fsd fsf fso fsr fss fst fsu ftc ftd ftf fto ftr fts ftt ftu fud fuf fuo fur fus fut fuu oc- occ ocd ocf oco ocr ocs oct ocu odc odd odf odo odr ods odt odu of- ofc ofd off ofo ofr ofs oft ofu oo- ooc ood oof ooo oor oos oot or- orc ord orf oro orr ors ort oru os- osc osd osf oso osr oss ost osu ot- otc otd otf oto otr ots ott otu ou- ouc oud ouf ouo our ous out rcc rcd rcf rco rcr rcs rct rcu rdc rdd rdf rdo rdr rds rdt rdu rfc rfd rff rfo rfr rfs rft rfu roc rod rof roo ror ros rot rou rrc rrd rrf rrr rrs rrt rru rsc rsd rsf rso rsr rss rst rsu rtc rtd rtf rto rtr rts rtt rtu ruc rud ruf ruo rur rus rut ruu scc scd scf sco scr scs sct scu sdc sdd sdf sdo sdr sds sdt sdu sfc sfd sff sfo sfr sfs sft sfu soc sod sof soo sor sos sot sou sr- src srd srf sro srr srs srt ss- ssc ssd ssf sso ssr sss sst ssu stc std stf sto str sts stt stu suc sud suf suo sur sus sut suu tcc tcd tcf tco tcr tcs tct tcu tdc tdd tdf tdo tdr tds tdt tdu tfc tfd tff tfo tfr tfs tft tfu to- toc tod tof too tor tos tot tou trc trd trf tro trr trs trt tru tsc tsd tsf tso tsr tss tst tsu ttc ttd ttf tto ttr tts ttt ttu tuc tud tuf tuo tur tus tut tuu ucc ucd ucf uco ucr ucs uct ucu udc udd udf udo udr uds udt udu ufc ufd uff ufo ufr ufs uft ufu uoc uod uoo uor uos uot ur- urc urd urf uro urr urs urt uru usc usd usf uso usr uss ust usu utc utd utf uto utr uts utt utu uuc uur uus uut uuu