-er a-a a-c aaa aac aad aae aah aao aap aar ac- aca acc acd ace ach aco acp acr ad- ada adc add ade adh ado adp adr aea aec aed aee aeh aeo aep aer aha ahc ahd ahe ahh aho ahp ahr aoa aoc aod aoe aoh aoo aop aor ap- apa apc apd ape aph apo app apr ar- ara arc ard are arh aro arp arr c-- caa cac cad cae cah cao cap car cca ccc ccd cce cch cco ccp ccr cda cdc cdd cde cdh cdo cdp cdr ce- cea cec ced cee ceh ceo cep cer ch- cha chc chd che chh cho chp chr co- coa coc cod coe coh coo cop cor cpa cpc cpd cpe cph cpo cpp cpr cra crc crd cre crh cro crp crr daa dac dad dae dah dao dap dar dca dcc dcd dce dco dcp dcr dda ddc ddd dde ddh ddo ddp ddr de- dea dec ded dee deh deo dep der dh- dha dhc dhd dhe dhh dho dhp dhr doa doc dod doe doh doo dop dor dpa dpc dpd dpe dph dpo dpp dpr dra drc drd dre dro drp drr eaa eac ead eae eah eao eap ear ec- eca ecc ecd ece ech eco ecr ed- eda edc edd ede edh edo edp edr eea eec eed eee eeo eep eer eha ehc ehd ehe ehh eho ehp ehr eo- eoa eoc eod eoe eoh eoo eop eor ep- epa epc epd epe eph epo epp epr era erc erd ere erh ero erp err haa hac had hae hah hao hap har hca hcc hcd hce hch hco hcp hcr hda hdc hdd hde hdh hdo hdp hdr he- hea hec hed hee heh heo hep her hha hhc hhd hhe hhh hho hhp hhr hoa hoc hod hoe hoh hoo hop hor hpa hpc hpd hpe hph hpo hpp hpr hr- hra hrc hrd hre hrh hro hrp hrr oaa oac oad oae oah oao oap oar oc- oca occ ocd och oco ocp ocr oda odc odd ode odh odo odp odr oea oec oed oee oeh oeo oep oer oha ohc ohd ohe ohh oho ohp ohr oo- ooa ooc ood ooh ooo oop oor op- opa opc opd ope oph opo opp opr or- ora orc ord ore orh oro orp orr p-p paa pac pad pae pah pao pap par pca pcc pcd pce pch pco pcp pcr pda pdc pdd pde pdh pdo pdp pdr pea pec ped pee peh peo pep per pha phc phd phe pho php phr poa poc pod poe poh poo pop por ppa ppc ppd ppe pph ppo ppp ppr pra prc prd pre prh pro prp prr ra- raa rac rad rae rah rao rap rar rca rcc rcd rce rch rco rcp rcr rda rdc rdd rde rdh rdo rdp rdr re- rea rec red ree reh reo rep rer rh- rha rhc rhd rhe rhh rho rhp rhr roa roc rod roe roh roo rop ror rpa rpc rpd rpe rph rpo rpp rpr rra rrc rrd rrh rrp rrr