a-a a-c a-t aaa aac aad aae aak aap aas aat ac- aca acc acd ace ack acp acs act ad- ada adc add ade adk adp ads adt aea aec aed aee aek aep aes aet aka akc akd ake akk akp aks ap- apa apc apd ape apk app aps apt as- asa asc asd ase ask asp ass ast at- ata atc atd ate atp ats att c-- caa cac cad cae cak cap cas cat cca ccc ccd cce cck ccp ccs cct cda cdc cdd cde cdk cdp cds cdt ce- cea cec ced cee cek cep ces cet cka ckc ckd cks ckt cpa cpc cpd cpe cpk cpp cps cpt csa csc csd cse csk csp css cst cta ctc ctd cte ctk ctp cts ctt daa dac dad dae dak dap das dat dca dcc dcd dce dck dcp dcs dct dda ddc ddd dde ddk ddp dds ddt de- dea dec ded dee dek dep des det dka dkc dke dkk dkp dks dkt dpa dpc dpd dpe dpk dpp dps dpt dsa dsc dsd dse dsk dsp dss dst dta dtc dtd dte dtk dtp dts dtt eaa eac ead eae eak eap eas eat ec- eca ecc ecd ece eck ecs ect ed- eda edc edd ede edk edp eds edt eea eec eed eee eek eep ees eet eka ekc ekd eke ekp eks ekt ep- epa epc epd epe epp eps ept es- esa esc esd ese esk esp ess est eta etc etd ete etk etp ets ett k-t ka- kaa kac kad kae kak kap kas kat kca kcc kcd kce kck kcp kcs kct kda kdc kde kdk kdp kds kdt ke- kea kec ked kee kek kep kes ket kkc kke kkk kkp kks kkt kpa kpc kpd kpe kpk kpp kps kpt ksa ksc ksd kse ksk ksp kss kst kta ktc kte ktk ktp kts ktt p-p paa pac pad pae pak pap pas pat pca pcc pcd pce pck pcp pcs pct pda pdc pdd pde pdk pdp pds pdt pea pec ped pee pek pep pes pet pka pkc pkd pke pkp pks pkt ppa ppc ppd ppe ppk ppp pps ppt ps- psa psc psd pse psk psp pss pst pt- pta ptc ptd pte ptk ptp pts ptt saa sac sad sae sak sap sas sat sca scc scd sce sck scp scs sct sda sdc sdd sde sdk sdp sds sdt se- sea sec sed see sek sep ses set sk- ska skc skd ske skk skp sks skt spa spc spd spe spk spp sps spt ss- ssa ssc ssd sse ssk ssp sss sst sta stc std ste stk stp sts stt taa tac tad tae tak tap tas tat tca tcc tcd tce tck tcp tcs tct tda tdc tdd tde tdk tdp tds tdt te- tea tec ted tee tek tep tes tet tka tkc tke tkk tkp tks tkt tpa tpc tpd tpe tpk tpp tps tpt tsa tsc tsd tse tsk tsp tss tst tta ttc ttd tte ttk ttp tts ttt