ceecee ceesse cerete certes cesser cesses cesset cestes creese creest creete cresce creset cresse cresst crests cretes csecse eerect erects eretes errest errett erster esetce essert essess esssse estees esterc esters estree estres estter esttes etcetc r-tree recces recess reects reeser reeses reests rerees rescet resect resees resets rester restes restte retece reteer retees reteet retere retest retree retret retter screes screte secess secres secret secter see-er seesee seetec sercer serere serers serest serre- serres serret sesser sesses sester sestet sestre setees seters settee setter steere steers stere- sterer steres sterre sterte street stress strete sttstc t-test t-tree teerts teests teetee teeter tercer terces tercet terese terete terets terrer terres terret terser terset terter tertre tesser tesses testee tester testes tetete tetter tr-rec treece treete treets tresse tretee tretes trette tsetse ttests