-er -ic c-- ccc ccd cce cci ccn cco ccr cct ccx cdc cdd cde cdi cdn cdo cdr cdt cdx ce- cec ced cee cei cen ceo cer cet cex ci- cic cid cie cii cin cio cir cit cix cn- cnc cnd cne cni cnn cno cnr cnt cnx co- coc cod coe coi con coo cor cot cox crc crd cre cri crn cro crr crt crx ctc ctd cte cti ctn cto ctr ctt ctx cxc cxi cxo cxr cxt cxx dcc dcd dce dci dcn dco dcr dct dcx ddc ddd dde ddi ddn ddo ddr ddt ddx de- dec ded dee dei den deo der det dex di- dic did die dii din dio dir dit dix dnc dnd dne dni dnn dno dnr dnt doc dod doe doi don doo dor dot dox drc drd dre dri drn dro drr drt drx dtc dtd dte dti dtn dto dtr dtt dtx dxc dxd dxi dxn dxo dxr dxt dxx ec- ecc ecd ece eci ecn eco ecr ect ecx ed- edc edd ede edi edn edo edr edt edx eec eed eee een eeo eer eet eex eic eid eie eii ein eio eir eit eix en- enc end ene eni enn eno enr ent eo- eoc eod eoe eoi eon eoo eor eot erc erd ere eri ern ero err ert etc etd ete eti etn eto etr ett etx ex- exc exd exe exi exo exr ext exx i-d icc icd ice ici icn ico icr ict idc idd ide idi idn ido idr idt idx ie- iec ied iee iei ien ier iet iex iic iid iie iii iin iio iir iit iix in- inc ind ine ini inn ino inr int inx io- ioc iod ioe ioi ion ioo ior iot ir- irc ird ire iri irn iro irr irt irx itc itd ite iti itn ito itt itx ixc ixe ixi ixn n-i ncc ncd nce nci ncn nco ncr nct ncx ndc ndd nde ndi ndn ndo ndr ndt ne- nec ned nee nei nen neo ner net nex nic nid nie nii nin nio nir nit nix nnc nne nni nnn nno nnt no- noc nod noe noi non noo nor not nox nrc nrd nre nri nrn nro nrr nrt nrx ntc ntd nte nti ntn nto ntr ntt ntx nxc nxd nxt o-i oc- occ ocd oci ocn oco ocr oct ocx odc odd ode odi odn odo odr odt oec oed oee oei oen oeo oer oet oex oic oid oie oii oin oio oir oit on- onc ond one oni onn ono onr ont onx oo- ooc ood ooi oon ooo oor oot oox or- orc ord ore ori orn oro orr ort orx ot- otc otd ote oti otn oto otr ott ox- oxc oxi oxn oxo oxt oxx rcc rcd rce rci rcn rco rcr rct rcx rdc rdd rde rdi rdn rdo rdr rdt rdx re- rec red ree rei ren reo rer ret rex ric rid rie rii rin rio rir rit rix rnc rnd rni rnn rno rnr rnt roc rod roe roi ron roo ror rot rox rrc rrd rri rrn rrr rrt rtc rtd rte rti rtn rto rtr rtt rtx rxr t-x tcc tcd tce tci tcn tco tcr tct tcx tdc tdd tde tdi tdn tdo tdr tdt tdx te- tec ted tee tei ten teo ter tet tex tic tid tie tii tin tio tir tit tix tnc tnd tne tni tnn tno tnr tnt tnx to- toc tod toe toi ton too tor tot tox trc trd tre tri trn tro trr trt trx ttc ttd tte tti ttn tto ttr ttt ttx txe txi txn txt xcd xci xcr xcx xdc xde xdi xdr xdt xed xee xen xer xet xex xic xie xii xin xio xit xix xnc xno xoc xod xoi xon xoo xor xot xox xrc xrd xrt xrx xtc xti xtr xtx xxi xxo xxx