-er -ol c-- ccc ccd cce ccl cco ccr ccu cdc cdd cde cdl cdo cdr cdu ce- cec ced cee cel ceo cer ceu cl- clc cld cle cll clo clr clu co- coc cod coe col coo cor cou crc crd cre crl cro crr cru cuc cud cue cul cuo cur cuu dcc dcd dce dcl dco dcr dcu ddc ddd dde ddl ddo ddr ddu de- dec ded dee del deo der deu dl- dlc dld dle dll dlo dlr dlu doc dod doe dol doo dor dou drc drd dre drl dro drr dru duc dud due dul duo dur ec- ecc ecd ece ecl eco ecr ecu ed- edc edd ede edl edo edr edu eec eed eee eel eeo eer elc eld ele ell elo elr elu eo- eoc eod eoe eol eoo eor eou erc erd ere erl ero err eru eu- euc eud eue eul eur lcc lcd lce lcl lco lcr lcu ldc ldd lde ldl ldo ldr ldu lec led lee lel leo ler leu llc lld lle lll llo llr llu loc lod loe lol loo lor lou lrc lrd lro lrr lru luc lud lue lul luo lur luu oc- occ ocd ocl oco ocr ocu odc odd ode odl odo odr odu oec oed oee oel oeo oer olc old ole oll olo olu oo- ooc ood ool ooo oor or- orc ord ore orl oro orr oru ou- ouc oud oue oul ouo our rcc rcd rce rcl rco rcr rcu rdc rdd rde rdl rdo rdr rdu re- rec red ree rel reo rer reu rlc rld rle rll rlo rlr rlu roc rod roe rol roo ror rou rrc rrd rrl rrr rru ruc rud rue ruo rur ruu ucc ucd uce ucl uco ucr ucu udc udd ude udl udo udr udu uec ued uee uel uer ulc uld ule ull ulo ulr ulu uoc uod uoe uol uoo uor ur- urc urd ure url uro urr uru uuc uue uur uuu