The letters A, B, C, ....., Z of the English Alphabet are numbered 1, 2 ......... 26 respectively. A Code is designed by the following rule:

Rule: The i th the letter is coded as the jth letter where $$j \equiv 3i + 2 (mod 26)$$. The reverse process is followed for decoding.

Example: The $$9^{th}$$ letter I is coded as C because, 3 X 9 + 2 (mod 26) is 29 (mod 26) which is 3 and the letter C is numbered as 3. Based on this coding
procedure answer the questions