-er -ol c-- ccc ccd cce ccl cco ccr ccx cdc cdd cde cdl cdo cdr cdx ce- cec ced cee cel ceo cer cex cl- clc cld cle cll clo clr clx co- coc cod coe col coo cor cox crc crd cre crl cro crr crx cxc cxl cxo cxr cxx dcc dcd dce dcl dco dcr dcx ddc ddd dde ddl ddo ddr ddx de- dec ded dee del deo der dex dl- dlc dld dle dll dlo dlr dlx doc dod doe dol doo dor dox drc drd dre drl dro drr drx dxc dxd dxl dxo dxr dxx ec- ecc ecd ece ecl eco ecr ecx ed- edc edd ede edl edo edr edx eec eed eee eel eeo eer eex elc eld ele ell elo elr elx eo- eoc eod eoe eol eoo eor erc erd ere erl ero err ex- exc exd exe exl exo exr exx lcc lcd lce lcl lco lcr lcx ldc ldd lde ldl ldo ldr lec led lee lel leo ler lex llc lld lle lll llo llr loc lod loe lol loo lor lox lrc lrd lro lrr lxc lxd lxo lxr lxx oc- occ ocd ocl oco ocr ocx odc odd ode odl odo odr oec oed oee oel oeo oer oex olc old ole oll olo oo- ooc ood ool ooo oor oox or- orc ord ore orl oro orr orx ox- oxc oxo oxx rcc rcd rce rcl rco rcr rcx rdc rdd rde rdl rdo rdr rdx re- rec red ree rel reo rer rex rlc rld rle rll rlo rlr roc rod roe rol roo ror rox rrc rrd rrl rrr rxr xcd xcl xcr xcx xdc xde xdr xed xee xel xer xex xld xlr xoc xod xoo xor xox xrc xrd xrx xxl xxo xxx