-er a-a a-c a-q a-t aaa aac aae aan aaq aar aas aat ac- aca acc ace acn acq acr acs act aea aec aee aen aeq aer aes aet an- ana anc ane ann anq anr ans ant aqa aqc aqn aqr aqs aqt ar- ara arc are arn arq arr ars art as- asa asc ase asn asq asr ass ast at- ata atc ate atn atr ats att c-- caa cac cae can caq car cas cat cca ccc cce ccn ccr ccs cct ce- cea cec cee cen ceq cer ces cet cn- cna cnc cne cnn cnr cns cnt cqa cqc cqs cqt cra crc cre crn crq crr crs crt csa csc cse csn csq csr css cst cta ctc cte ctn ctq ctr cts ctt eaa eac eae ean ear eas eat ec- eca ecc ece ecn ecq ecr ecs ect eea eec eee een eer ees eet en- ena enc ene enn enr ens ent eqa eqe eqn eqq eqs eqt era erc ere ern erq err ers ert es- esa esc ese esn esq esr ess est eta etc ete etn etr ets ett naa nac nae nan nar nas nat nca ncc nce ncn ncr ncs nct ne- nea nec nee nen ner nes net nna nnc nne nnn nns nnt nqc nqs nqt nra nrc nre nrn nrr nrs nrt nsa nsc nse nsn nsr nss nst nta ntc nte ntn ntq ntr nts ntt qaa qac qan qar qas qat qca qcc qcs qct qec qee qen qet qne qns qqq qra qrc qre qrs qrt qsa qsc qsr qst qta qtc qtq qtr qts ra- raa rac rae ran raq rar ras rat rca rcc rce rcn rcr rcs rct re- rea rec ree ren req rer res ret rna rnc rnn rnr rns rnt rqc rqn rqs rra rrc rrn rrq rrr rrs rrt rsa rsc rse rsn rsq rsr rss rst rta rtc rte rtn rtq rtr rts rtt saa sac sae san saq sar sas sat sca scc sce scn scr scs sct se- sea sec see sen seq ser ses set sna snc sne snn snr sns snt sqa sqn sqq sqr sqs sr- sra src sre srn srq srr srs srt ss- ssa ssc sse ssn ssq ssr sss sst sta stc ste stn stq str sts stt taa tac tae tan taq tar tas tat tca tcc tce tcn tcr tcs tct te- tea tec tee ten teq ter tes tet tna tnc tne tnn tnq tnr tns tnt tra trc tre trn trq trr trs trt tsa tsc tse tsn tsq tsr tss tst tta ttc tte ttn ttr tts ttt