-th a-a a-c a-t aaa aac aah aao aap aar aat ac- aca acc ach aco acp acr act aha ahc ahh aho ahp ahr aht aoa aoc aoh aoo aop aor aot ap- apa apc aph apo app apr apt ar- ara arc arh aro arp arr art at- ata atc ath ato atp atr att c-- caa cac cah cao cap car cat cca ccc cch cco ccp ccr cct ch- cha chc chh cho chp chr cht co- coa coc coh coo cop cor cot cpa cpc cph cpo cpp cpr cpt cra crc crh cro crp crr crt cta ctc cth cto ctp ctr ctt haa hac hah hao hap har hat hca hcc hch hco hcp hcr hct hha hhc hhh hho hhp hhr hht hoa hoc hoh hoo hop hor hot hpa hpc hph hpo hpp hpr hpt hr- hra hrc hrh hro hrp hrr hrt hta htc hth hto htp htr htt oaa oac oah oao oap oar oat oc- oca occ och oco ocp ocr oct oha ohc ohh oho ohp ohr oht oo- ooa ooc ooh ooo oop oor oot op- opa opc oph opo opp opr opt or- ora orc orh oro orp orr ort ot- ota otc oth oto otp otr ott p-p paa pac pah pao pap par pat pca pcc pch pco pcp pcr pct pha phc pho php phr pht poa poc poh poo pop por pot ppa ppc pph ppo ppp ppr ppt pra prc prh pro prp prr prt pt- pta ptc pth pto ptp ptr ptt ra- raa rac rah rao rap rar rat rca rcc rch rco rcp rcr rct rh- rha rhc rhh rho rhp rhr rht roa roc roh roo rop ror rot rpa rpc rph rpo rpp rpr rpt rra rrc rrh rrp rrr rrt rta rtc rto rtp rtr rtt taa tac tah tao tap tar tat tca tcc tch tco tcp tcr tct th- tha thc thh tho thp thr tht to- toa toc toh too top tor tot tpa tpc tph tpo tpp tpr tpt tra trc trh tro trp trr trt tta ttc tth tto ttp ttr ttt