Explanation : Refer to Tables 5.1 and 5.2.
For example, C is ranked 3 in Table 5.1. The same rank
denotes ‘X’ in Table 5.2. Thus, X is coded for C.
Thus, CERTAIN has been coded as XVIGZRM. Similarly,
MUNDANE can be coded as NFMWZMV.
Explanation : The first and the last letters of the word swap their
positions. All other letters are moved one place and get
placed in the reverse manner.