-er a-a a-c aaa aac aad aae aah aak aap aar ac- aca acc acd ace ach ack acp acr ad- ada adc add ade adh adk adp adr aea aec aed aee aeh aek aep aer aha ahc ahd ahe ahh ahk ahp ahr aka akc akd ake akh akk akp akr ap- apa apc apd ape aph apk app apr ar- ara arc ard are arh ark arp arr c-- caa cac cad cae cah cak cap car cca ccc ccd cce cch cck ccp ccr cda cdc cdd cde cdh cdk cdp cdr ce- cea cec ced cee ceh cek cep cer ch- cha chc chd che chh chk chp chr cka ckc ckd ckh cpa cpc cpd cpe cph cpk cpp cpr cra crc crd cre crh crk crp crr daa dac dad dae dah dak dap dar dca dcc dcd dce dck dcp dcr dda ddc ddd dde ddh ddk ddp ddr de- dea dec ded dee deh dek dep der dh- dha dhc dhd dhe dhh dhk dhp dhr dka dkc dke dkk dkp dkr dpa dpc dpd dpe dph dpk dpp dpr dra drc drd dre drk drp drr eaa eac ead eae eah eak eap ear ec- eca ecc ecd ece ech eck ecr ed- eda edc edd ede edh edk edp edr eea eec eed eee eek eep eer eha ehc ehd ehe ehh ehp ehr eka ekc ekd eke ekh ekp ekr ep- epa epc epd epe eph epp epr era erc erd ere erh erk erp err haa hac had hae hah hak hap har hca hcc hcd hce hch hck hcp hcr hda hdc hdd hde hdh hdk hdp hdr he- hea hec hed hee heh hek hep her hha hhc hhd hhe hhh hhk hhp hhr hka hkd hkh hkk hkp hkr hpa hpc hpd hpe hph hpk hpp hpr hr- hra hrc hrd hre hrh hrk hrp hrr ka- kaa kac kad kae kah kak kap kar kca kcc kcd kce kch kck kcp kcr kda kdc kde kdh kdk kdp kdr ke- kea kec ked kee keh kek kep ker kha khe khh khk khr kkc kke kkh kkk kkp kkr kpa kpc kpd kpe kph kpk kpp kpr kra krc krd krk krp krr p-p paa pac pad pae pah pak pap par pca pcc pcd pce pch pck pcp pcr pda pdc pdd pde pdh pdk pdp pdr pea pec ped pee peh pek pep per pha phc phd phe phk php phr pka pkc pkd pke pkp pkr ppa ppc ppd ppe pph ppk ppp ppr pra prc prd pre prh prk prp prr ra- raa rac rad rae rah rak rap rar rca rcc rcd rce rch rcp rcr rda rdc rdd rde rdh rdp rdr re- rea rec red ree reh rek rep rer rh- rha rhc rhd rhe rhh rhp rhr rkc rke rkk rkp rpa rpc rpd rpe rph rpk rpp rpr rra rrc rrd rrh rrk rrp rrr