-ol c-- ccc ccd ccl cco ccr ccu cdc cdd cdl cdo cdr cdu cl- clc cld cll clo clr clu co- coc cod col coo cor cou crc crd crl cro crr cru cuc cud cul cuo cur cuu dcc dcd dcl dco dcr dcu ddc ddd ddl ddo ddr ddu dl- dlc dld dll dlo dlr dlu doc dod dol doo dor dou drc drd drl dro drr dru duc dud dul duo dur lcc lcd lcl lco lcr lcu ldc ldd ldl ldo ldr ldu llc lld lll llo llr llu loc lod lol loo lor lou lrc lrd lro lrr lru luc lud lul luo lur luu oc- occ ocd ocl oco ocr ocu odc odd odl odo odr odu olc old oll olo olu oo- ooc ood ool ooo oor or- orc ord orl oro orr oru ou- ouc oud oul ouo our rcc rcd rcl rco rcr rcu rdc rdd rdl rdo rdr rdu rlc rld rll rlo rlr rlu roc rod rol roo ror rou rrc rrd rrl rrr rru ruc rud ruo rur ruu ucc ucd ucl uco ucr ucu udc udd udl udo udr udu ulc uld ull ulo ulr ulu uoc uod uol uoo uor ur- urc urd url uro urr uru uuc uur uuu