a-a a-c a-t aaa aac aae aam aan aas aat ac- aca acc ace acm acn acs act aea aec aee aem aen aes aet ama amc ame amm amn ams amt an- ana anc ane anm ann ans ant as- asa asc ase asm asn ass ast at- ata atc ate atm atn ats att c-- caa cac cae cam can cas cat cca ccc cce ccm ccn ccs cct ce- cea cec cee cem cen ces cet cma cmc cme cmm cmn cms cmt cn- cna cnc cne cnm cnn cns cnt csa csc cse csm csn css cst cta ctc cte ctm ctn cts ctt eaa eac eae eam ean eas eat ec- eca ecc ece ecm ecn ecs ect eea eec eee eem een ees eet em- ema emc eme emm emn ems emt en- ena enc ene enm enn ens ent es- esa esc ese esm esn ess est eta etc ete etm etn ets ett maa mac mae mam man mas mat mc- mca mcc mce mcm mcn mcs mct mea mec mee mem men mes met mma mmc mme mmm mmn mms mmt mna mnc mne mnm mnn mns mnt msa msc mse msm msn mss mst mta mtc mte mtm mtn mts mtt naa nac nae nam nan nas nat nca ncc nce ncm ncn ncs nct ne- nea nec nee nem nen nes net nma nmc nme nmm nmn nms nmt nna nnc nne nnm nnn nns nnt nsa nsc nse nsm nsn nss nst nta ntc nte ntm ntn nts ntt saa sac sae sam san sas sat sca scc sce scm scn scs sct se- sea sec see sem sen ses set sma smc sme smm smn sms smt sna snc sne snm snn sns snt ss- ssa ssc sse ssm ssn sss sst sta stc ste stm stn sts stt taa tac tae tam tan tas tat tca tcc tce tcm tcn tcs tct te- tea tec tee tem ten tes tet tma tmc tme tmm tmn tms tmt tna tnc tne tnm tnn tns tnt tsa tsc tse tsm tsn tss tst tta ttc tte ttm ttn tts ttt