-er -ic c-- ccc ccd cce cci cco ccr ccu cdc cdd cde cdi cdo cdr cdu ce- cec ced cee cei ceo cer ceu ci- cic cid cie cii cio cir ciu co- coc cod coe coi coo cor cou crc crd cre cri cro crr cru cuc cud cue cui cuo cur cuu dcc dcd dce dci dco dcr dcu ddc ddd dde ddi ddo ddr ddu de- dec ded dee dei deo der deu di- dic did die dii dio dir diu doc dod doe doi doo dor dou drc drd dre dri dro drr dru duc dud due dui duo dur ec- ecc ecd ece eci eco ecr ecu ed- edc edd ede edi edo edr edu eec eed eee eeo eer eic eid eie eii eio eir eiu eo- eoc eod eoe eoi eoo eor eou erc erd ere eri ero err eru eu- euc eud eue eui eur i-d icc icd ice ici ico icr icu idc idd ide idi ido idr idu ie- iec ied iee iei ier iic iid iie iii iio iir iiu io- ioc iod ioe ioi ioo ior iou ir- irc ird ire iri iro irr iru iu- iuc iud iue iui iur o-i oc- occ ocd oci oco ocr ocu odc odd ode odi odo odr odu oec oed oee oei oeo oer oic oid oie oii oio oir oiu oo- ooc ood ooi ooo oor or- orc ord ore ori oro orr oru ou- ouc oud oue oui ouo our rcc rcd rce rci rco rcr rcu rdc rdd rde rdi rdo rdr rdu re- rec red ree rei reo rer reu ric rid rie rii rio rir roc rod roe roi roo ror rou rrc rrd rri rrr rru ruc rud rue rui ruo rur ruu ucc ucd uce uci uco ucr ucu udc udd ude udi udo udr udu uec ued uee uei uer uic uid uie uii uio uir uiu uoc uod uoe uoo uor ur- urc urd ure uri uro urr uru uuc uue uur uuu