-er a-a a-c aaa aac aad aae aaf aah aak aao aar ac- aca acc acd ace acf ach ack aco acr ad- ada adc add ade adf adh adk ado adr aea aec aed aee aef aeh aek aeo aer af- afa afc afd afe aff afh afk afo afr aha ahc ahd ahe ahf ahh ahk aho ahr aka akc akd ake akh akk ako akr aoa aoc aod aoe aof aoh aok aoo aor ar- ara arc ard are arf arh ark aro arr c-- caa cac cad cae caf cah cak cao car cca ccc ccd cce ccf cch cck cco ccr cda cdc cdd cde cdf cdh cdk cdo cdr ce- cea cec ced cee cef ceh cek ceo cer cfa cfc cfd cfe cff cfh cfk cfo cfr ch- cha chc chd che chf chh chk cho chr cka ckc ckd ckh cko co- coa coc cod coe cof coh cok coo cor cra crc crd cre crf crh crk cro crr daa dac dad dae daf dah dak dao dar dca dcc dcd dce dcf dck dco dcr dda ddc ddd dde ddf ddh ddk ddo ddr de- dea dec ded dee def deh dek deo der dfa dfc dfd dfe dff dfh dfk dfo dfr dh- dha dhc dhd dhe dhf dhh dhk dho dhr dka dkc dke dkk dko dkr doa doc dod doe dof doh dok doo dor dra drc drd dre drk dro drr eaa eac ead eae eaf eah eak eao ear ec- eca ecc ecd ece ecf ech eck eco ecr ed- eda edc edd ede edf edh edk edo edr eea eec eed eee eef eek eeo eer ef- efa efc efd efe eff efh efo efr eha ehc ehd ehe ehf ehh eho ehr eka ekc ekd eke ekf ekh eko ekr eo- eoa eoc eod eoe eof eoh eok eoo eor era erc erd ere erf erh erk ero err faa fac fad fae faf fah fak fao far fca fcc fcd fce fcf fck fco fcr fda fdc fdd fde fdf fdh fdk fdo fdr fea fec fed fee fef feh fek feo fer ffa ffc ffd ffe fff ffh ffk ffo ffr fha fhc fhe fhf fhh fho fhr fka fkc fkf fkk foa foc foe fof foh fok foo for fra frc frd fre frf frh frk fro frr haa hac had hae haf hah hak hao har hca hcc hcd hce hcf hch hck hco hcr hda hdc hdd hde hdf hdh hdk hdo hdr he- hea hec hed hee hef heh hek heo her hfa hfc hfd hfe hff hfh hfk hfo hfr hha hhc hhd hhe hhf hhh hhk hho hhr hka hkd hkf hkh hkk hko hkr hoa hoc hod hoe hof hoh hok hoo hor hr- hra hrc hrd hre hrf hrh hrk hro hrr ka- kaa kac kad kae kaf kah kak kao kar kca kcc kcd kce kch kck kcr kda kdc kde kdf kdh kdk kdo kdr ke- kea kec ked kee kef keh kek keo ker kfa kfc kfd kff kfh kfo kha khe khf khh khk kho khr kkc kke kkh kkk kkr koa koc kod koe kof koh kok koo kor kra krc krd krf krk kro krr oaa oac oad oae oaf oah oak oao oar oc- oca occ ocd ocf och ock oco ocr oda odc odd ode odf odh odo odr oea oec oed oee oef oeh oeo oer of- ofa ofc ofd ofe off ofo ofr oha ohc ohd ohe ohf ohh oho ohr oka okc okd oke okk oko okr oo- ooa ooc ood oof ooh ook ooo oor or- ora orc ord ore orf orh ork oro orr ra- raa rac rad rae raf rah rak rao rar rca rcc rcd rce rcf rch rco rcr rda rdc rdd rde rdf rdh rdo rdr re- rea rec red ree ref reh rek reo rer rfa rfc rfd rfe rff rfh rfk rfo rfr rh- rha rhc rhd rhe rhf rhh rho rhr rkc rke rkf rkk rko roa roc rod roe rof roh rok roo ror rra rrc rrd rrf rrh rrk rrr