Correct: out, south, ground, outline, ouch, lousy, hound, cow, crown, chowder, now, flower, outside, cloud, count, sound, shower, powder, tower, rebound, owl, clown, frown, shout, crowd, power, bow, gown, noun, down, Incorrect: snow, glow, blow, elbow, rainbow, throw, low, crow,

/ou/ with ow and ou

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