Sprite animation help

So I am wondering how I would implement a sprite sheet with multiple animations on it. Sofar I have this script that just goes from one offset to the other

Code (csharp):

1. var uvAnimationTileX = 24; //Here you can place the number of columns of your sheet. //The above sheet has 24
2.  
3. var uvAnimationTileY = 1; //Here you can place the number of rows of your sheet. //The above sheet has 1 var framesPerSecond = 10.0;
4.  
5. function Update () {
6.  
7. // Calculate index
8. var index : int = Time.time * framesPerSecond;
9. // repeat when exhausting all frames
10. index = index % (uvAnimationTileX * uvAnimationTileY);
11.  
12. // Size of every tile
13. var size = Vector2 (1.0 / uvAnimationTileX, 1.0 / uvAnimationTileY);
14.  
15. // split into horizontal and vertical index
16. var uIndex = index % uvAnimationTileX;
17. var vIndex = index / uvAnimationTileX;
18.  
19. // build offset
20. // v coordinate is the bottom of the image in opengl so we need to invert.
21. var offset = Vector2 (uIndex * size.x, 1.0 - size.y - vIndex * size.y);
22.  
23. renderer.material.SetTextureOffset ("_MainTex", offset);
24. renderer.material.SetTextureScale ("_MainTex", size);
25. }

`
The problem now is that I would like to make it so that I can have one row be one animation and the next row could be another animation so I could animate a sheet like this

so I would really appreciate the help if someone would tell me how to do this. Thanks in advance.

EDIT: I don't have any money to spend on any software

 

Have you seen these:
https://www.assetstore.unity3d.com/#/content/1014
https://www.assetstore.unity3d.com/#/content/4640

 

I have used simplesprite, it really is pretty simple