Jeem Haa Kha (ج، ح، خ) ki shakal shuru, darmiyan or akhir men kesi aati hai ? How are the shapes of Jeem, Haa, Kha (ج، ح، خ) when they fall in the beginning, middle and the end of the words?

Question: Jeem Haa Kha (ج، ح، خ) ki shakal shuru, darmiyan or akhir men kesi aati hai ? How are the shapes of Jeem, Haa, Kha (ج، ح، خ) when they fall in the beginning, middle and the end of the words?