pprf pptt pre- pred pree pref prek prel prep pret prle prlr pro- prod proe prof prol proo prop prot prpd prrd prtp prtr pter ptld ptol ptop ptpd ptrd ptrf pttk rder redd rede redl redo redr reed reef reek reel reep reet refd refe reff refl refr reft reke reko rekt reld rele rell relo relp relt reod reof reol reop reot repe repl repo repp repr rept rerd rere rero rert retd rete reto retr rett rfef rffl rkkf rldt rlee rlef rodd rode rodo roed roel roer roet rofe roff rofl rofo roke rokk roko rokr rold role rolf rolk roll rolo rolp rolt rood roof rook rool roop roor root rope ropo rore rork roro rort rote rotk rotl roto rotr rott rpdp rpet rpoe rpof rptd rred rrle rrrr rtdt rtee rtle rtlt rttp tdff tdkp tdkr tdor tedd tede tedk teed teef teek teel teer teet teff tefl teft teke tel- teld tele tell telo telt teok teor tepe tepp ter- tere terf terk tero terp terr tete teto tetr tett tfot tfpt tftp tkod tkof tkol tldp tldr todd tode todo todt toed toee toek toer toet toff tofo toft toke toko tol- told tole tolk toll tolo tolt tood toof took tool toor toot top- topd tope topf topo topp topt tord tore torf tork toro torp torr tort totd tote toto totr tott tpdf tped tper tpke tpld tpol tppd tppp tppr tpte tptp tptr tre- tred tree tref trek treo tret trfd trfr trod troe troo trop trot trpe trpp trte trtr tteo tter ttff ttoe ttop tttt