-th -up hhh hhp hhr hht hhu hph hpp hpr hpt hpu hr- hrh hrp hrr hrt hru hth htp htr htt huh hup hur hut huu p-p php phr pht phu pph ppp ppr ppt ppu prh prp prr prt pru pt- pth ptp ptr ptt ptu puh pup pur put puu rh- rhh rhp rhr rht rhu rph rpp rpr rpt rpu rrh rrp rrr rrt rru rtp rtr rtt rtu ruh rup rur rut ruu th- thh thp thr tht thu tph tpp tpr tpt tpu trh trp trr trt tru tth ttp ttr ttt ttu tuh tup tur tut tuu uhh uhp uhr uht uhu up- uph upp upr upt upu ur- urp urr urt uru uth utp utr utt utu uur uut uuu