Thanks bungii. But my son will pronounce the word 蚂蚁 when he does the han yu pin yin questions. To him, it is second and third sound. He also knows tt when writing pin yin, they want the original sound. But the problem is he does not know the original sound of 蚂 is the third sound. I would not know too unless I have come across such a question.
Anyone with a list of such words. Can share? Thank you.