-er -ic a-a a-c a-i aaa aac aad aae aai aao aar ac- aca acc acd ace aci aco acr ad- ada adc add ade adi ado adr aea aec aed aee aei aeo aer ai- aia aic aid aie aii aio air aoa aoc aod aoe aoi aoo aor ar- ara arc ard are ari aro arr c-- caa cac cad cae cai cao car cca ccc ccd cce cci cco ccr cda cdc cdd cde cdi cdo cdr ce- cea cec ced cee cei ceo cer ci- cia cic cid cie cii cio cir co- coa coc cod coe coi coo cor cra crc crd cre cri cro crr daa dac dad dae dai dao dar dca dcc dcd dce dci dco dcr dda ddc ddd dde ddi ddo ddr de- dea dec ded dee dei deo der di- dia dic did die dii dio dir doa doc dod doe doi doo dor dra drc drd dre dri dro drr eaa eac ead eae eai eao ear ec- eca ecc ecd ece eci eco ecr ed- eda edc edd ede edi edo edr eea eec eed eee eeo eer eia eic eid eie eii eio eir eo- eoa eoc eod eoe eoi eoo eor era erc erd ere eri ero err i-d ia- iaa iac iad iae iai iao iar ica icc icd ice ici ico icr ida idc idd ide idi ido idr ie- iea iec ied iee iei ier iia iic iid iie iii iio iir io- ioa ioc iod ioe ioi ioo ior ir- ira irc ird ire iri iro irr o-i oaa oac oad oae oai oao oar oc- oca occ ocd oci oco ocr oda odc odd ode odi odo odr oea oec oed oee oei oeo oer oia oic oid oie oii oio oir oo- ooa ooc ood ooi ooo oor or- ora orc ord ore ori oro orr ra- raa rac rad rae rai rao rar rca rcc rcd rce rci rco rcr rda rdc rdd rde rdi rdo rdr re- rea rec red ree rei reo rer ria ric rid rie rii rio rir roa roc rod roe roi roo ror rra rrc rrd rri rrr