Check if a word exists in a grid or not

Given a 2D grid of characters and a word, the task is to check if that word exists in the grid or not. A word can be matched in 4 directions at any point.

The 4 directions are Horizontally Left and Right, Vertically Up and Down. 

Examples: 
 

Input:  grid[][] = {"axmy",
                   "bgdf",
                   "xeet",
                   "raks"};
Output: Yes

Check if a word exists in a grid or not : https://www.geeksforgeeks.org/check-if-a-word-exists-in-a-grid-or-not/