jug hug up sun u /ʌ/ mug rug bug Short ug/ʌg/ vowels (Nguyên ud /ʌd/ mud bud pup cup âm ngắn) up /ʌp/ hut nut nut ut/ʌt/ ub /ʌb/ cub tub gum hum um/ʌn/ run fun bun un/ʌn/