-th a-a a-c a-t aaa aac aah aap aas aat ac- aca acc ach acp acs act aha ahc ahh ahp ahs aht ap- apa apc aph app aps apt as- asa asc ash asp ass ast at- ata atc ath atp ats att c-- caa cac cah cap cas cat cca ccc cch ccp ccs cct ch- cha chc chh chp chs cht cpa cpc cph cpp cps cpt csa csc csh csp css cst cta ctc cth ctp cts ctt haa hac hah hap has hat hca hcc hch hcp hcs hct hha hhc hhh hhp hhs hht hpa hpc hph hpp hps hpt hsa hsc hsh hsp hss hst hta htc hth htp hts htt p-p paa pac pah pap pas pat pca pcc pch pcp pcs pct pha phc php phs pht ppa ppc pph ppp pps ppt ps- psa psc psh psp pss pst pt- pta ptc pth ptp pts ptt saa sac sah sap sas sat sca scc sch scp scs sct sh- sha shc shh shp shs sht spa spc sph spp sps spt ss- ssa ssc ssh ssp sss sst sta stc sth stp sts stt taa tac tah tap tas tat tca tcc tch tcp tcs tct th- tha thc thh thp ths tht tpa tpc tph tpp tps tpt tsa tsc tsh tsp tss tst tta ttc tth ttp tts ttt