-er a-a a-c a-t aaa aac aad aae aam aap aar aas aat ac- aca acc acd ace acm acp acr acs act ad- ada adc add ade adm adp adr ads adt aea aec aed aee aem aep aer aes aet ama amc amd ame amm amp amr ams amt ap- apa apc apd ape apm app apr aps apt ar- ara arc ard are arm arp arr ars art as- asa asc asd ase asm asp asr ass ast at- ata atc atd ate atm atp atr ats att c-- caa cac cad cae cam cap car cas cat cca ccc ccd cce ccm ccp ccr ccs cct cda cdc cdd cde cdm cdp cdr cds cdt ce- cea cec ced cee cem cep cer ces cet cma cmc cmd cme cmm cmp cmr cms cmt cpa cpc cpd cpe cpm cpp cpr cps cpt cra crc crd cre crm crp crr crs crt csa csc csd cse csm csp csr css cst cta ctc ctd cte ctm ctp ctr cts ctt daa dac dad dae dam dap dar das dat dca dcc dcd dce dcm dcp dcr dcs dct dda ddc ddd dde ddm ddp ddr dds ddt de- dea dec ded dee dem dep der des det dma dmc dmd dme dmm dmp dmr dms dmt dpa dpc dpd dpe dpm dpp dpr dps dpt dra drc drd dre drm drp drr drs drt dsa dsc dsd dse dsm dsp dsr dss dst dta dtc dtd dte dtm dtp dtr dts dtt eaa eac ead eae eam eap ear eas eat ec- eca ecc ecd ece ecm ecr ecs ect ed- eda edc edd ede edm edp edr eds edt eea eec eed eee eem eep eer ees eet em- ema emc emd eme emm emp emr ems emt ep- epa epc epd epe epm epp epr eps ept era erc erd ere erm erp err ers ert es- esa esc esd ese esm esp esr ess est eta etc etd ete etm etp etr ets ett m-r maa mac mad mae mam map mar mas mat mc- mca mcc mcd mce mcm mcp mcr mcs mct mda mdc mdd mde mdm mdp mdr mds mdt mea mec med mee mem mep mer mes met mma mmc mmd mme mmm mmp mmr mms mmt mpa mpc mpd mpe mpm mpp mpr mps mpt mra mrc mrd mre mrm mrp mrr mrs mrt msa msc msd mse msm msp msr mss mst mta mtc mtd mte mtm mtp mtr mts mtt p-p paa pac pad pae pam pap par pas pat pca pcc pcd pce pcm pcp pcr pcs pct pda pdc pdd pde pdm pdp pdr pds pdt pea pec ped pee pem pep per pes pet pma pmc pmd pme pmm pmp pmr pms pmt ppa ppc ppd ppe ppm ppp ppr pps ppt pra prc prd pre prm prp prr prs prt ps- psa psc psd pse psm psp psr pss pst pt- pta ptc ptd pte ptm ptp ptr pts ptt ra- raa rac rad rae ram rap rar ras rat rca rcc rcd rce rcm rcp rcr rcs rct rda rdc rdd rde rdm rdp rdr rds rdt re- rea rec red ree rem rep rer res ret rma rmc rmd rme rmm rmp rmr rms rmt rpa rpc rpd rpe rpm rpp rpr rps rpt rra rrc rrd rrm rrp rrr rrs rrt rsa rsc rsd rse rsm rsp rsr rss rst rta rtc rtd rte rtm rtp rtr rts rtt saa sac sad sae sam sap sar sas sat sca scc scd sce scm scp scr scs sct sda sdc sdd sde sdm sdp sdr sds sdt se- sea sec sed see sem sep ser ses set sma smc smd sme smm smp smr sms smt spa spc spd spe spm spp spr sps spt sr- sra src srd sre srm srp srr srs srt ss- ssa ssc ssd sse ssm ssp ssr sss sst sta stc std ste stm stp str sts stt taa tac tad tae tam tap tar tas tat tca tcc tcd tce tcm tcp tcr tcs tct tda tdc tdd tde tdm tdp tdr tds tdt te- tea tec ted tee tem tep ter tes tet tma tmc tmd tme tmm tmp tmr tms tmt tpa tpc tpd tpe tpm tpp tpr tps tpt tra trc trd tre trm trp trr trs trt tsa tsc tsd tse tsm tsp tsr tss tst tta ttc ttd tte ttm ttp ttr tts ttt