-er a-a a-c aaa aac aad aae aak aam aar aas ac- aca acc acd ace ack acm acr acs ad- ada adc add ade adk adm adr ads aea aec aed aee aek aem aer aes aka akc akd ake akk akm akr aks ama amc amd ame amk amm amr ams ar- ara arc ard are ark arm arr ars as- asa asc asd ase ask asm asr ass c-- caa cac cad cae cak cam car cas cca ccc ccd cce cck ccm ccr ccs cda cdc cdd cde cdk cdm cdr cds ce- cea cec ced cee cek cem cer ces cka ckc ckd ckm cks cma cmc cmd cme cmk cmm cmr cms cra crc crd cre crk crm crr crs csa csc csd cse csk csm csr css daa dac dad dae dak dam dar das dca dcc dcd dce dck dcm dcr dcs dda ddc ddd dde ddk ddm ddr dds de- dea dec ded dee dek dem der des dka dkc dke dkk dkm dkr dks dma dmc dmd dme dmk dmm dmr dms dra drc drd dre drk drm drr drs dsa dsc dsd dse dsk dsm dsr dss eaa eac ead eae eak eam ear eas ec- eca ecc ecd ece eck ecm ecr ecs ed- eda edc edd ede edk edm edr eds eea eec eed eee eek eem eer ees eka ekc ekd eke ekr eks em- ema emc emd eme emk emm emr ems era erc erd ere erk erm err ers es- esa esc esd ese esk esm esr ess ka- kaa kac kad kae kak kam kar kas kca kcc kcd kce kck kcm kcr kcs kda kdc kde kdk kdm kdr kds ke- kea kec ked kee kek kem ker kes kkc kke kkk kkm kkr kks kma kmc kmd kme kmk kmm kms kra krc krd krk krr krs ksa ksc ksd kse ksk ksm ksr kss m-r maa mac mad mae mak mam mar mas mc- mca mcc mcd mce mck mcm mcr mcs mda mdc mdd mde mdk mdm mdr mds mea mec med mee mek mem mer mes mka mkc mkd mke mkk mkm mkr mks mma mmc mmd mme mmk mmm mmr mms mra mrc mrd mre mrk mrm mrr mrs msa msc msd mse msk msm msr mss ra- raa rac rad rae rak ram rar ras rca rcc rcd rce rcm rcr rcs rda rdc rdd rde rdm rdr rds re- rea rec red ree rek rem rer res rkc rke rkk rkm rks rma rmc rmd rme rmm rmr rms rra rrc rrd rrk rrm rrr rrs rsa rsc rsd rse rsk rsm rsr rss saa sac sad sae sak sam sar sas sca scc scd sce sck scm scr scs sda sdc sdd sde sdk sdm sdr sds se- sea sec sed see sek sem ser ses sk- ska skc skd ske skk skm skr sks sma smc smd sme smk smm smr sms sr- sra src srd sre srk srm srr srs ss- ssa ssc ssd sse ssk ssm ssr sss