-th a-a a-c a-t aaa aac aah aap aat ac- aca acc ach acp act aha ahc ahh ahp aht ap- apa apc aph app apt at- ata atc ath atp att c-- caa cac cah cap cat cca ccc cch ccp cct ch- cha chc chh chp cht cpa cpc cph cpp cpt cta ctc cth ctp ctt haa hac hah hap hat hca hcc hch hcp hct hha hhc hhh hhp hht hpa hpc hph hpp hpt hta htc hth htp htt p-p paa pac pah pap pat pca pcc pch pcp pct pha phc php pht ppa ppc pph ppp ppt pt- pta ptc pth ptp ptt taa tac tah tap tat tca tcc tch tcp tct th- tha thc thh thp tht tpa tpc tph tpp tpt tta ttc tth ttp ttt