a-a a-c a-t aaa aac aad aak aap aas aat ac- aca acc acd ack acp acs act ad- ada adc add adk adp ads adt aka akc akd akk akp aks ap- apa apc apd apk app aps apt as- asa asc asd ask asp ass ast at- ata atc atd atp ats att c-- caa cac cad cak cap cas cat cca ccc ccd cck ccp ccs cct cda cdc cdd cdk cdp cds cdt cka ckc ckd cks ckt cpa cpc cpd cpk cpp cps cpt csa csc csd csk csp css cst cta ctc ctd ctk ctp cts ctt daa dac dad dak dap das dat dca dcc dcd dck dcp dcs dct dda ddc ddd ddk ddp dds ddt dka dkc dkk dkp dks dkt dpa dpc dpd dpk dpp dps dpt dsa dsc dsd dsk dsp dss dst dta dtc dtd dtk dtp dts dtt k-t ka- kaa kac kad kak kap kas kat kca kcc kcd kck kcp kcs kct kda kdc kdk kdp kds kdt kkc kkk kkp kks kkt kpa kpc kpd kpk kpp kps kpt ksa ksc ksd ksk ksp kss kst kta ktc ktk ktp kts ktt p-p paa pac pad pak pap pas pat pca pcc pcd pck pcp pcs pct pda pdc pdd pdk pdp pds pdt pka pkc pkd pkp pks pkt ppa ppc ppd ppk ppp pps ppt ps- psa psc psd psk psp pss pst pt- pta ptc ptd ptk ptp pts ptt saa sac sad sak sap sas sat sca scc scd sck scp scs sct sda sdc sdd sdk sdp sds sdt sk- ska skc skd skk skp sks skt spa spc spd spk spp sps spt ss- ssa ssc ssd ssk ssp sss sst sta stc std stk stp sts stt taa tac tad tak tap tas tat tca tcc tcd tck tcp tcs tct tda tdc tdd tdk tdp tds tdt tka tkc tkk tkp tks tkt tpa tpc tpd tpk tpp tps tpt tsa tsc tsd tsk tsp tss tst tta ttc ttd ttk ttp tts ttt