a-a a-c a-t aaa aac aad aae aak aan aas aat ac- aca acc acd ace ack acn acs act ad- ada adc add ade adk adn ads adt aea aec aed aee aek aen aes aet aka akc akd ake akk akn aks an- ana anc and ane ank ann ans ant as- asa asc asd ase ask asn ass ast at- ata atc atd ate atn ats att c-- caa cac cad cae cak can cas cat cca ccc ccd cce cck ccn ccs cct cda cdc cdd cde cdk cdn cds cdt ce- cea cec ced cee cek cen ces cet cka ckc ckd cks ckt cn- cna cnc cnd cne cnn cns cnt csa csc csd cse csk csn css cst cta ctc ctd cte ctk ctn cts ctt daa dac dad dae dak dan das dat dca dcc dcd dce dck dcn dcs dct dda ddc ddd dde ddk ddn dds ddt de- dea dec ded dee dek den des det dka dkc dke dkk dks dkt dna dnc dnd dne dnk dnn dns dnt dsa dsc dsd dse dsk dsn dss dst dta dtc dtd dte dtk dtn dts dtt eaa eac ead eae eak ean eas eat ec- eca ecc ecd ece eck ecn ecs ect ed- eda edc edd ede edk edn eds edt eea eec eed eee eek een ees eet eka ekc ekd eke eks ekt en- ena enc end ene enk enn ens ent es- esa esc esd ese esk esn ess est eta etc etd ete etk etn ets ett k-t ka- kaa kac kad kae kak kan kas kat kca kcc kcd kce kck kcn kcs kct kda kdc kde kdk kds kdt ke- kea kec ked kee kek ken kes ket kkc kke kkk kkn kks kkt kn- kna knc knd kne knk knn knt ksa ksc ksd kse ksk ksn kss kst kta ktc kte ktk ktn kts ktt naa nac nad nae nak nan nas nat nca ncc ncd nce nck ncn ncs nct nda ndc ndd nde ndk ndn nds ndt ne- nea nec ned nee nek nen nes net nka nkc nke nkk nkn nks nkt nna nnc nne nnk nnn nns nnt nsa nsc nsd nse nsk nsn nss nst nta ntc ntd nte ntk ntn nts ntt saa sac sad sae sak san sas sat sca scc scd sce sck scn scs sct sda sdc sdd sde sdk sdn sds sdt se- sea sec sed see sek sen ses set sk- ska skc skd ske skk sks skt sna snc snd sne snk snn sns snt ss- ssa ssc ssd sse ssk ssn sss sst sta stc std ste stk stn sts stt taa tac tad tae tak tan tas tat tca tcc tcd tce tck tcn tcs tct tda tdc tdd tde tdk tdn tds tdt te- tea tec ted tee tek ten tes tet tka tkc tke tkk tks tkt tna tnc tnd tne tnk tnn tns tnt tsa tsc tsd tse tsk tsn tss tst tta ttc ttd tte ttk ttn tts ttt