-er -ic c-- ccc ccd cce cci cco ccr ccu ccx cdc cdd cde cdi cdo cdr cdu cdx ce- cec ced cee cei ceo cer ceu cex ci- cic cid cie cii cio cir ciu cix co- coc cod coe coi coo cor cou cox crc crd cre cri cro crr cru crx cuc cud cue cui cuo cur cuu cxc cxi cxo cxr cxx dcc dcd dce dci dco dcr dcu dcx ddc ddd dde ddi ddo ddr ddu ddx de- dec ded dee dei deo der deu dex di- dic did die dii dio dir diu dix doc dod doe doi doo dor dou dox drc drd dre dri dro drr dru drx duc dud due dui duo dur dux dxc dxd dxi dxo dxr dxx ec- ecc ecd ece eci eco ecr ecu ecx ed- edc edd ede edi edo edr edu edx eec eed eee eeo eer eex eic eid eie eii eio eir eiu eix eo- eoc eod eoe eoi eoo eor eou erc erd ere eri ero err eru eu- euc eud eue eui eur eux ex- exc exd exe exi exo exr exu exx i-d icc icd ice ici ico icr icu idc idd ide idi ido idr idu idx ie- iec ied iee iei ier iex iic iid iie iii iio iir iiu iix io- ioc iod ioe ioi ioo ior iou ir- irc ird ire iri iro irr iru irx iu- iuc iud iue iui iur ixc ixe ixi o-i oc- occ ocd oci oco ocr ocu ocx odc odd ode odi odo odr odu oec oed oee oei oeo oer oex oic oid oie oii oio oir oiu oo- ooc ood ooi ooo oor oox or- orc ord ore ori oro orr oru orx ou- ouc oud oue oui ouo our ox- oxc oxi oxo oxx rcc rcd rce rci rco rcr rcu rcx rdc rdd rde rdi rdo rdr rdu rdx re- rec red ree rei reo rer reu rex ric rid rie rii rio rir rix roc rod roe roi roo ror rou rox rrc rrd rri rrr rru ruc rud rue rui ruo rur ruu rux rxr ucc ucd uce uci uco ucr ucu udc udd ude udi udo udr udu udx uec ued uee uei uer uic uid uie uii uio uir uiu uoc uod uoe uoo uor uox ur- urc urd ure uri uro urr uru urx uuc uue uur uuu uxc uxo uxr uxu xcd xci xcr xcx xdc xde xdi xdr xed xee xer xeu xex xic xie xii xio xiu xix xoc xod xoi xoo xor xox xrc xrd xrx xue xui xxi xxo xxx