Letter sound D. Pain and say d的。D的the deer的dear，the dog dog. duck. Duck door. The door stay with me, the the dear. Dear the the dog. Duck, duck, duck. The door, the the door, deer, deer, dog, dog, duck, duck. Door, door, dear deer, dog, dog, duck, duck, door, door, let's say d sex, the the dear dog. duck dres a door on the dark red floor. B that duck, the dear dog duck, then draw a door on the dark red floor. See you next time.