c-- ccc ccd ccg cco ccr cct ccu cdc cdd cdg cdo cdr cdt cdu cgc cgd cgg cgo cgr cgt cgu co- coc cod cog coo cor cot cou crc crd crg cro crr crt cru ctc ctd ctg cto ctr ctt ctu cuc cud cug cuo cur cut cuu dcc dcd dcg dco dcr dct dcu ddc ddd ddg ddo ddr ddt ddu dgc dgd dgg dgr dgt dgu doc dod dog doo dor dot dou drc drd drg dro drr drt dru dtc dtd dtg dto dtr dtt dtu duc dud dug duo dur dut g-d gcc gcd gcg gco gcr gct gcu gdc gdd gdo gdr gdt gdu ggc ggd ggg ggo ggr ggt ggu goc god gog goo gor got gou grc grd grg gro grr grt gru gtc gtd gtg gto gtr gtt gtu gu- guc gud gug guo gur gut guu oc- occ ocd ocg oco ocr oct ocu odc odd odg odo odr odt odu ogc ogd ogg ogo ogt oo- ooc ood oog ooo oor oot or- orc ord org oro orr ort oru ot- otc otd otg oto otr ott otu ou- ouc oud ouo our out rcc rcd rcg rco rcr rct rcu rdc rdd rdg rdo rdr rdt rdu rgc rgd rgg rgo rgr rgt roc rod rog roo ror rot rou rrc rrd rrg rrr rrt rru rtc rtd rtg rto rtr rtt rtu ruc rud rug ruo rur rut ruu tcc tcd tcg tco tcr tct tcu tdc tdd tdg tdo tdr tdt tdu tgc tgg tgo tgr tgt tgu to- toc tod tog too tor tot tou trc trd trg tro trr trt tru ttc ttd ttg tto ttr ttt ttu tuc tud tug tuo tur tut tuu ucc ucd ucg uco ucr uct ucu udc udd udg udo udr udt udu ugc ugg ugo ugr ugt ugu uoc uod uog uoo uor uot ur- urc urd urg uro urr urt uru utc utd uto utr utt utu uuc uug uur uut uuu