a-a a-c a-t aaa aac aad aak aan aas aat ac- aca acc acd ack acn acs act ad- ada adc add adk adn ads adt aka akc akd akk akn aks an- ana anc and ank ann ans ant as- asa asc asd ask asn ass ast at- ata atc atd atn ats att c-- caa cac cad cak can cas cat cca ccc ccd cck ccn ccs cct cda cdc cdd cdk cdn cds cdt cka ckc ckd cks ckt cn- cna cnc cnd cnn cns cnt csa csc csd csk csn css cst cta ctc ctd ctk ctn cts ctt daa dac dad dak dan das dat dca dcc dcd dck dcn dcs dct dda ddc ddd ddk ddn dds ddt dka dkc dkk dks dkt dna dnc dnd dnk dnn dns dnt dsa dsc dsd dsk dsn dss dst dta dtc dtd dtk dtn dts dtt k-t ka- kaa kac kad kak kan kas kat kca kcc kcd kck kcn kcs kct kda kdc kdk kds kdt kkc kkk kkn kks kkt kn- kna knc knd knk knn knt ksa ksc ksd ksk ksn kss kst kta ktc ktk ktn kts ktt naa nac nad nak nan nas nat nca ncc ncd nck ncn ncs nct nda ndc ndd ndk ndn nds ndt nka nkc nkk nkn nks nkt nna nnc nnk nnn nns nnt nsa nsc nsd nsk nsn nss nst nta ntc ntd ntk ntn nts ntt saa sac sad sak san sas sat sca scc scd sck scn scs sct sda sdc sdd sdk sdn sds sdt sk- ska skc skd skk sks skt sna snc snd snk snn sns snt ss- ssa ssc ssd ssk ssn sss sst sta stc std stk stn sts stt taa tac tad tak tan tas tat tca tcc tcd tck tcn tcs tct tda tdc tdd tdk tdn tds tdt tka tkc tkk tks tkt tna tnc tnd tnk tnn tns tnt tsa tsc tsd tsk tsn tss tst tta ttc ttd ttk ttn tts ttt