a-a a-c a-t aaa aac aae aam aan aao aas aat ac- aca acc ace acm acn aco acs act aea aec aee aem aen aeo aes aet ama amc ame amm amn amo ams amt an- ana anc ane anm ann ano ans ant aoa aoc aoe aom aon aoo aos aot as- asa asc ase asm asn aso ass ast at- ata atc ate atm atn ato ats att c-- caa cac cae cam can cao cas cat cca ccc cce ccm ccn cco ccs cct ce- cea cec cee cem cen ceo ces cet cma cmc cme cmm cmn cmo cms cmt cn- cna cnc cne cnm cnn cno cns cnt co- coa coc coe com con coo cos cot csa csc cse csm csn cso css cst cta ctc cte ctm ctn cto cts ctt eaa eac eae eam ean eao eas eat ec- eca ecc ece ecm ecn eco ecs ect eea eec eee eem een eeo ees eet em- ema emc eme emm emn emo ems emt en- ena enc ene enm enn eno ens ent eo- eoa eoc eoe eom eon eoo eos eot es- esa esc ese esm esn eso ess est eta etc ete etm etn eto ets ett m-o maa mac mae mam man mao mas mat mc- mca mcc mce mcm mcn mco mcs mct mea mec mee mem men meo mes met mma mmc mme mmm mmn mmo mms mmt mna mnc mne mnm mnn mno mns mnt moa moc moe mom mon moo mos mot msa msc mse msm msn mso mss mst mta mtc mte mtm mtn mto mts mtt naa nac nae nam nan nao nas nat nca ncc nce ncm ncn nco ncs nct ne- nea nec nee nem nen neo nes net nma nmc nme nmm nmn nmo nms nmt nna nnc nne nnm nnn nno nns nnt no- noa noc noe nom non noo nos not nsa nsc nse nsm nsn nso nss nst nta ntc nte ntm ntn nto nts ntt oaa oac oae oam oan oao oas oat oc- oca occ ocm ocn oco ocs oct oea oec oee oem oen oeo oes oet om- oma omc ome omm omn omo oms omt on- ona onc one onn ono ons ont oo- ooa ooc oom oon ooo oos oot os- osa osc ose osm osn oso oss ost ot- ota otc ote otm otn oto ots ott saa sac sae sam san sao sas sat sca scc sce scm scn sco scs sct se- sea sec see sem sen seo ses set sma smc sme smm smn smo sms smt sna snc sne snm snn sno sns snt soa soc soe som son soo sos sot ss- ssa ssc sse ssm ssn sso sss sst sta stc ste stm stn sto sts stt taa tac tae tam tan tao tas tat tca tcc tce tcm tcn tco tcs tct te- tea tec tee tem ten teo tes tet tma tmc tme tmm tmn tmo tms tmt tna tnc tne tnm tnn tno tns tnt to- toa toc toe tom ton too tos tot tsa tsc tse tsm tsn tso tss tst tta ttc tte ttm ttn tto tts ttt