-er -ic a-a a-c a-i aaa aac aad aae aai aao aar aax ac- aca acc acd ace aci aco acr acx ad- ada adc add ade adi ado adr adx aea aec aed aee aei aeo aer aex ai- aia aic aid aie aii aio air aix aoa aoc aod aoe aoi aoo aor aox ar- ara arc ard are ari aro arr arx ax- axa axe axi axo axr axx c-- caa cac cad cae cai cao car cax cca ccc ccd cce cci cco ccr ccx cda cdc cdd cde cdi cdo cdr cdx ce- cea cec ced cee cei ceo cer cex ci- cia cic cid cie cii cio cir cix co- coa coc cod coe coi coo cor cox cra crc crd cre cri cro crr crx cxc cxi cxo cxr cxx daa dac dad dae dai dao dar dax dca dcc dcd dce dci dco dcr dcx dda ddc ddd dde ddi ddo ddr ddx de- dea dec ded dee dei deo der dex di- dia dic did die dii dio dir dix doa doc dod doe doi doo dor dox dra drc drd dre dri dro drr drx dxc dxd dxi dxo dxr dxx eaa eac ead eae eai eao ear eax ec- eca ecc ecd ece eci eco ecr ecx ed- eda edc edd ede edi edo edr edx eea eec eed eee eeo eer eex eia eic eid eie eii eio eir eix eo- eoa eoc eod eoe eoi eoo eor era erc erd ere eri ero err ex- exa exc exd exe exi exo exr exx i-d ia- iaa iac iad iae iai iao iar ica icc icd ice ici ico icr ida idc idd ide idi ido idr idx ie- iea iec ied iee iei ier iex iia iic iid iie iii iio iir iix io- ioa ioc iod ioe ioi ioo ior ir- ira irc ird ire iri iro irr irx ixc ixe ixi o-i oaa oac oad oae oai oao oar oax oc- oca occ ocd oci oco ocr ocx oda odc odd ode odi odo odr oea oec oed oee oei oeo oer oex oia oic oid oie oii oio oir oo- ooa ooc ood ooi ooo oor oox or- ora orc ord ore ori oro orr orx ox- oxa oxc oxi oxo oxx ra- raa rac rad rae rai rao rar rax rca rcc rcd rce rci rco rcr rcx rda rdc rdd rde rdi rdo rdr rdx re- rea rec red ree rei reo rer rex ria ric rid rie rii rio rir rix roa roc rod roe roi roo ror rox rra rrc rrd rri rrr rxr xaa xac xad xar xcd xci xcr xcx xda xdc xde xdi xdr xed xee xer xex xia xic xie xii xio xix xoa xoc xod xoi xoo xor xox xrc xrd xrx xxi xxo xxx