c-- ccc ccd cce cck cco ccs cct ccu cdc cdd cde cdk cdo cds cdt cdu ce- cec ced cee cek ceo ces cet ceu ckc ckd cko cks ckt co- coc cod coe cok coo cos cot cou csc csd cse csk cso css cst csu ctc ctd cte ctk cto cts ctt ctu cuc cud cue cuk cuo cus cut cuu dcc dcd dce dck dco dcs dct dcu ddc ddd dde ddk ddo dds ddt ddu de- dec ded dee dek deo des det deu dkc dke dkk dko dks dkt dku doc dod doe dok doo dos dot dou dsc dsd dse dsk dso dss dst dsu dtc dtd dte dtk dto dts dtt dtu duc dud due duk duo dus dut ec- ecc ecd ece eck eco ecs ect ecu ed- edc edd ede edk edo eds edt edu eec eed eee eek eeo ees eet ekc ekd eke eko eks ekt eku eo- eoc eod eoe eok eoo eos eot eou es- esc esd ese esk eso ess est esu etc etd ete etk eto ets ett etu eu- euc eud eue eus eut k-t kcc kcd kce kck kcs kct kcu kdc kde kdk kdo kds kdt kdu ke- kec ked kee kek keo kes ket kkc kke kkk kks kkt kku koc kod koe kok koo kos kot kou ksc ksd kse ksk kso kss kst ksu ktc kte ktk kto kts ktt ktu kuc kud kue kuk kus kut kuu oc- occ ocd ock oco ocs oct ocu odc odd ode odo ods odt odu oec oed oee oeo oes oet okc okd oke okk oko oks oku oo- ooc ood ook ooo oos oot os- osc osd ose osk oso oss ost osu ot- otc otd ote otk oto ots ott otu ou- ouc oud oue ouk ouo ous out scc scd sce sck sco scs sct scu sdc sdd sde sdk sdo sds sdt sdu se- sec sed see sek seo ses set seu sk- skc skd ske skk sko sks skt sku soc sod soe sok soo sos sot sou ss- ssc ssd sse ssk sso sss sst ssu stc std ste stk sto sts stt stu suc sud sue suk suo sus sut suu tcc tcd tce tck tco tcs tct tcu tdc tdd tde tdk tdo tds tdt tdu te- tec ted tee tek teo tes tet teu tkc tke tkk tko tks tkt to- toc tod toe tok too tos tot tou tsc tsd tse tsk tso tss tst tsu ttc ttd tte ttk tto tts ttt ttu tuc tud tue tuk tuo tus tut tuu ucc ucd uce uck uco ucs uct ucu udc udd ude udk udo uds udt udu uec ued uee ues uet ukc uke ukk uku uoc uod uoe uok uoo uos uot usc usd use usk uso uss ust usu utc utd ute utk uto uts utt utu uuc uue uus uut uuu