-er a-a a-c a-t aaa aac aae aam aan aar aas aat ac- aca acc ace acm acn acr acs act aea aec aee aem aen aer aes aet ama amc ame amm amn amr ams amt an- ana anc ane anm ann anr ans ant ar- ara arc are arm arn arr ars art as- asa asc ase asm asn asr ass ast at- ata atc ate atm atn atr ats att c-- caa cac cae cam can car cas cat cca ccc cce ccm ccn ccr ccs cct ce- cea cec cee cem cen cer ces cet cma cmc cme cmm cmn cmr cms cmt cn- cna cnc cne cnm cnn cnr cns cnt cra crc cre crm crn crr crs crt csa csc cse csm csn csr css cst cta ctc cte ctm ctn ctr cts ctt eaa eac eae eam ean ear eas eat ec- eca ecc ece ecm ecn ecr ecs ect eea eec eee eem een eer ees eet em- ema emc eme emm emn emr ems emt en- ena enc ene enm enn enr ens ent era erc ere erm ern err ers ert es- esa esc ese esm esn esr ess est eta etc ete etm etn etr ets ett m-r maa mac mae mam man mar mas mat mc- mca mcc mce mcm mcn mcr mcs mct mea mec mee mem men mer mes met mma mmc mme mmm mmn mmr mms mmt mna mnc mne mnm mnn mnr mns mnt mra mrc mre mrm mrn mrr mrs mrt msa msc mse msm msn msr mss mst mta mtc mte mtm mtn mtr mts mtt naa nac nae nam nan nar nas nat nca ncc nce ncm ncn ncr ncs nct ne- nea nec nee nem nen ner nes net nma nmc nme nmm nmn nmr nms nmt nna nnc nne nnm nnn nns nnt nra nrc nre nrm nrn nrr nrs nrt nsa nsc nse nsm nsn nsr nss nst nta ntc nte ntm ntn ntr nts ntt ra- raa rac rae ram ran rar ras rat rca rcc rce rcm rcn rcr rcs rct re- rea rec ree rem ren rer res ret rma rmc rme rmm rmn rmr rms rmt rna rnc rnm rnn rnr rns rnt rra rrc rrm rrn rrr rrs rrt rsa rsc rse rsm rsn rsr rss rst rta rtc rte rtm rtn rtr rts rtt saa sac sae sam san sar sas sat sca scc sce scm scn scr scs sct se- sea sec see sem sen ser ses set sma smc sme smm smn smr sms smt sna snc sne snm snn snr sns snt sr- sra src sre srm srn srr srs srt ss- ssa ssc sse ssm ssn ssr sss sst sta stc ste stm stn str sts stt taa tac tae tam tan tar tas tat tca tcc tce tcm tcn tcr tcs tct te- tea tec tee tem ten ter tes tet tma tmc tme tmm tmn tmr tms tmt tna tnc tne tnm tnn tnr tns tnt tra trc tre trm trn trr trs trt tsa tsc tse tsm tsn tsr tss tst tta ttc tte ttm ttn ttr tts ttt