Based upon the following coding system and ihe conditions (i), (ii), (iii), given below answer the questions.

Conditions:
(i) If the first element is a symbol and the last element is a number, then the codes for both elements are to be interchanged
(ii) If both the first and the last elements are symbols, then the last element's code is to be taken as the code for the first element.
(iii) If the group of elements contain ony one symbol, then that symbol is to be coded as A.