a-a a-c a-t aaa aac aae aak aam aan aas aat ac- aca acc ace ack acm acn acs act aea aec aee aek aem aen aes aet aka akc ake akk akm akn aks ama amc ame amk amm amn ams amt an- ana anc ane ank anm ann ans ant as- asa asc ase ask asm asn ass ast at- ata atc ate atm atn ats att c-- caa cac cae cak cam can cas cat cca ccc cce cck ccm ccn ccs cct ce- cea cec cee cek cem cen ces cet cka ckc ckm cks ckt cma cmc cme cmk cmm cmn cms cmt cn- cna cnc cne cnm cnn cns cnt csa csc cse csk csm csn css cst cta ctc cte ctk ctm ctn cts ctt eaa eac eae eak eam ean eas eat ec- eca ecc ece eck ecm ecn ecs ect eea eec eee eek eem een ees eet eka ekc eke eks ekt em- ema emc eme emk emm emn ems emt en- ena enc ene enk enm enn ens ent es- esa esc ese esk esm esn ess est eta etc ete etk etm etn ets ett k-t ka- kaa kac kae kak kam kan kas kat kca kcc kce kck kcm kcn kcs kct ke- kea kec kee kek kem ken kes ket kkc kke kkk kkm kkn kks kkt kma kmc kme kmk kmm kms kmt kn- kna knc kne knk knm knn knt ksa ksc kse ksk ksm ksn kss kst kta ktc kte ktk ktm ktn kts ktt maa mac mae mak mam man mas mat mc- mca mcc mce mck mcm mcn mcs mct mea mec mee mek mem men mes met mka mkc mke mkk mkm mkn mks mkt mma mmc mme mmk mmm mmn mms mmt mna mnc mne mnk mnm mnn mns mnt msa msc mse msk msm msn mss mst mta mtc mte mtk mtm mtn mts mtt naa nac nae nak nam nan nas nat nca ncc nce nck ncm ncn ncs nct ne- nea nec nee nek nem nen nes net nka nkc nke nkk nkm nkn nks nkt nma nmc nme nmk nmm nmn nms nmt nna nnc nne nnk nnm nnn nns nnt nsa nsc nse nsk nsm nsn nss nst nta ntc nte ntk ntm ntn nts ntt saa sac sae sak sam san sas sat sca scc sce sck scm scn scs sct se- sea sec see sek sem sen ses set sk- ska skc ske skk skm sks skt sma smc sme smk smm smn sms smt sna snc sne snk snm snn sns snt ss- ssa ssc sse ssk ssm ssn sss sst sta stc ste stk stm stn sts stt taa tac tae tak tam tan tas tat tca tcc tce tck tcm tcn tcs tct te- tea tec tee tek tem ten tes tet tka tkc tke tkk tkm tks tkt tma tmc tme tmk tmm tmn tms tmt tna tnc tne tnk tnm tnn tns tnt tsa tsc tse tsk tsm tsn tss tst tta ttc tte ttk ttm ttn tts ttt