-th a-a a-c a-t aaa aac aah aao aap aat ac- aca acc ach aco acp act aha ahc ahh aho ahp aht aoa aoc aoh aoo aop aot ap- apa apc aph apo app apt at- ata atc ath ato atp att c-- caa cac cah cao cap cat cca ccc cch cco ccp cct ch- cha chc chh cho chp cht co- coa coc coh coo cop cot cpa cpc cph cpo cpp cpt cta ctc cth cto ctp ctt haa hac hah hao hap hat hca hcc hch hco hcp hct hha hhc hhh hho hhp hht hoa hoc hoh hoo hop hot hpa hpc hph hpo hpp hpt hta htc hth hto htp htt oaa oac oah oao oap oat oc- oca occ och oco ocp oct oha ohc ohh oho ohp oht oo- ooa ooc ooh ooo oop oot op- opa opc oph opo opp opt ot- ota otc oth oto otp ott p-p paa pac pah pao pap pat pca pcc pch pco pcp pct pha phc pho php pht poa poc poh poo pop pot ppa ppc pph ppo ppp ppt pt- pta ptc pth pto ptp ptt taa tac tah tao tap tat tca tcc tch tco tcp tct th- tha thc thh tho thp tht to- toa toc toh too top tot tpa tpc tph tpo tpp tpt tta ttc tth tto ttp ttt