eerier errett i-tree ipeter irrite ittiri peepee peeper peerer peerie peeter peetre peetri peiere peiper pepper perere perier perire perite perper perpet perree perret perrie perter pertie pertre peteet peteri petiet petite petree petrer petri- petrie petter pettet petti- pettit pieper pierie pierre pierri pieter pietri piette piperi pipier pipipi pipiri pipper pippet pippip piree pirrie pirrip pitier pitpit pitter pittie pppppp preeti preier preire preter pretre prette priere pterri r-tree reeper reiter repete repier repipe repper reprie reteer reteet retere retire retree retret retrip retter rieter riette rietti ripert ripier ripper rippet rippit rititi ritter t-tree teepee teetee teeter teirei teppei tepper terepi terete terper terrer terret terrie territ terter tertre tetete tetter tierer tieret tiete tietie tip-it tipiti tippee tipper tippet tippit tirret tirrit titiri tittee titter tittie treete treppe tretee tretie trette tripet trippe triter tritip