Church, lurch, birch, perch, search, smirch.§
URD.
Curd, absurd, bird, gird,§ word, and the preterites and participles of verbs in UR and IR.
URE.
Cure, pure, dure, lure, sure, abjure, allure, assure, demure, conjure, endure, manure, inure, insure, immature, immure, mature, obscure, procure, secure, adjure, calenture, coverture, epicure, investiture, forfeiture, furniture, miniature, nourriture, overture, portraiture, primogeniture, temperature, poor, moor, etc.
URF.
Turf, scurf, serf, surf, etc.
URGE.
Purge, urge, surge, scourge, thaumaturge, gurge,† verge, diverge, etc.
URK.