-er a-a a-c aaa aac aad aae aah aak aar aas ac- aca acc acd ace ach ack acr acs ad- ada adc add ade adh adk adr ads aea aec aed aee aeh aek aer aes aha ahc ahd ahe ahh ahk ahr ahs aka akc akd ake akh akk akr aks ar- ara arc ard are arh ark arr ars as- asa asc asd ase ash ask asr ass c-- caa cac cad cae cah cak car cas cca ccc ccd cce cch cck ccr ccs cda cdc cdd cde cdh cdk cdr cds ce- cea cec ced cee ceh cek cer ces ch- cha chc chd che chh chk chr chs cka ckc ckd ckh cks cra crc crd cre crh crk crr crs csa csc csd cse csh csk csr css daa dac dad dae dah dak dar das dca dcc dcd dce dck dcr dcs dda ddc ddd dde ddh ddk ddr dds de- dea dec ded dee deh dek der des dh- dha dhc dhd dhe dhh dhk dhr dhs dka dkc dke dkk dkr dks dra drc drd dre drk drr drs dsa dsc dsd dse dsh dsk dsr dss eaa eac ead eae eah eak ear eas ec- eca ecc ecd ece ech eck ecr ecs ed- eda edc edd ede edh edk edr eds eea eec eed eee eek eer ees eha ehc ehd ehe ehh ehr ehs eka ekc ekd eke ekh ekr eks era erc erd ere erh erk err ers es- esa esc esd ese esh esk esr ess haa hac had hae hah hak har has hca hcc hcd hce hch hck hcr hcs hda hdc hdd hde hdh hdk hdr hds he- hea hec hed hee heh hek her hes hha hhc hhd hhe hhh hhk hhr hhs hka hkd hkh hkk hkr hks hr- hra hrc hrd hre hrh hrk hrr hrs hsa hsc hsd hse hsh hsk hsr hss ka- kaa kac kad kae kah kak kar kas kca kcc kcd kce kch kck kcr kcs kda kdc kde kdh kdk kdr kds ke- kea kec ked kee keh kek ker kes kha khe khh khk khr khs kkc kke kkh kkk kkr kks kra krc krd krk krr krs ksa ksc ksd kse ksh ksk ksr kss ra- raa rac rad rae rah rak rar ras rca rcc rcd rce rch rcr rcs rda rdc rdd rde rdh rdr rds re- rea rec red ree reh rek rer res rh- rha rhc rhd rhe rhh rhr rhs rkc rke rkk rks rra rrc rrd rrh rrk rrr rrs rsa rsc rsd rse rsh rsk rsr rss saa sac sad sae sah sak sar sas sca scc scd sce sch sck scr scs sda sdc sdd sde sdh sdk sdr sds se- sea sec sed see seh sek ser ses sh- sha shc shd she shh shk shr shs sk- ska skc skd ske skh skk skr sks sr- sra src srd sre srh srk srr srs ss- ssa ssc ssd sse ssh ssk ssr sss