-er a-a a-c aaa aac aad aae aam aan aar ac- aca acc acd ace acm acn acr ad- ada adc add ade adm adn adr aea aec aed aee aem aen aer ama amc amd ame amm amn amr an- ana anc and ane anm ann anr ar- ara arc ard are arm arn arr c-- caa cac cad cae cam can car cca ccc ccd cce ccm ccn ccr cda cdc cdd cde cdm cdn cdr ce- cea cec ced cee cem cen cer cma cmc cmd cme cmm cmn cmr cn- cna cnc cnd cne cnm cnn cnr cra crc crd cre crm crn crr daa dac dad dae dam dan dar dca dcc dcd dce dcm dcn dcr dda ddc ddd dde ddm ddn ddr de- dea dec ded dee dem den der dma dmc dmd dme dmm dmn dmr dna dnc dnd dne dnm dnn dnr dra drc drd dre drm drn drr eaa eac ead eae eam ean ear ec- eca ecc ecd ece ecm ecn ecr ed- eda edc edd ede edm edn edr eea eec eed eee eem een eer em- ema emc emd eme emm emn emr en- ena enc end ene enm enn enr era erc erd ere erm ern err m-r maa mac mad mae mam man mar mc- mca mcc mcd mce mcm mcn mcr mda mdc mdd mde mdm mdn mdr mea mec med mee mem men mer mma mmc mmd mme mmm mmn mmr mna mnc mne mnm mnn mnr mra mrc mrd mre mrm mrn mrr naa nac nad nae nam nan nar nca ncc ncd nce ncm ncn ncr nda ndc ndd nde ndm ndn ndr ne- nea nec ned nee nem nen ner nma nmc nmd nme nmm nmn nmr nna nnc nne nnm nnn nra nrc nrd nre nrm nrn nrr ra- raa rac rad rae ram ran rar rca rcc rcd rce rcm rcn rcr rda rdc rdd rde rdm rdn rdr re- rea rec red ree rem ren rer rma rmc rmd rme rmm rmn rmr rna rnc rnd rnm rnn rnr rra rrc rrd rrm rrn rrr