-er a-a a-c a-t aaa aac aad aae aam aar aat ac- aca acc acd ace acm acr act ad- ada adc add ade adm adr adt aea aec aed aee aem aer aet ama amc amd ame amm amr amt ar- ara arc ard are arm arr art at- ata atc atd ate atm atr att c-- caa cac cad cae cam car cat cca ccc ccd cce ccm ccr cct cda cdc cdd cde cdm cdr cdt ce- cea cec ced cee cem cer cet cma cmc cmd cme cmm cmr cmt cra crc crd cre crm crr crt cta ctc ctd cte ctm ctr ctt daa dac dad dae dam dar dat dca dcc dcd dce dcm dcr dct dda ddc ddd dde ddm ddr ddt de- dea dec ded dee dem der det dma dmc dmd dme dmm dmr dmt dra drc drd dre drm drr drt dta dtc dtd dte dtm dtr dtt eaa eac ead eae eam ear eat ec- eca ecc ecd ece ecm ecr ect ed- eda edc edd ede edm edr edt eea eec eed eee eem eer eet em- ema emc emd eme emm emr emt era erc erd ere erm err ert eta etc etd ete etm etr ett m-r maa mac mad mae mam mar mat mc- mca mcc mcd mce mcm mcr mct mda mdc mdd mde mdm mdr mdt mea mec med mee mem mer met mma mmc mmd mme mmm mmr mmt mra mrc mrd mre mrm mrr mrt mta mtc mtd mte mtm mtr mtt ra- raa rac rad rae ram rar rat rca rcc rcd rce rcm rcr rct rda rdc rdd rde rdm rdr rdt re- rea rec red ree rem rer ret rma rmc rmd rme rmm rmr rmt rra rrc rrd rrm rrr rrt rta rtc rtd rte rtm rtr rtt taa tac tad tae tam tar tat tca tcc tcd tce tcm tcr tct tda tdc tdd tde tdm tdr tdt te- tea tec ted tee tem ter tet tma tmc tmd tme tmm tmr tmt tra trc trd tre trm trr trt tta ttc ttd tte ttm ttr ttt