Xamarin Forms: How to generate a word search puzzle matrix?

I am trying to implement a word search game on my xamarin forms application. Only words are getting when I call my service. With these words how can I generate a letter matrix?

I am expecting a 10x10 letter matrix like below screenshot:

The words are hidden inside this matrix-like below screenshot (Stephen, Nicholas, Ambrose, Juan Diego, Xavier, Sylvester I):

The words can put in any format: the right to left, left to right, top to bottom, bottom to top or in crossway.

Is there any tool for this feature? I need to select the letters as per screenshot 2 for playing this game.