Arrange the given words in alphabetical order and choose the one that comes in the second place.

Arrange the given words in alphabetical order and choose the one that comes in the second place:

Each of the following questions is based on the following alphabet series.
$A, B, C, D, E, F, G, H, I, J, K, L, M$
$N, O, P, Q, R, S, T, U, V, W, X, Y, Z$
If the letters of the given alphabet interchange positions,so that $A$ takes the place of $Z$ and $Z$ takes the place of $A$; $B$ takes the place of $Y$ and $Y$ takes the place of $B$ and so on,what will be the thirteenth letter from the right?

Each of the following questions is based on the following alphabet series.
$A, B, C, D, E, F, G, H, I, J, K, L, M$
$N, O, P, Q, R, S, T, U, V, W, X, Y, Z$
Write the above English alphabet in reverse order. First,cancel every second letter and then select that letter which divides the remaining letters of the alphabet into two equal parts. This letter is:

How many pairs of letters are there in the word $PENCIL$ which have as many letters between them in the word as in the alphabet?

If there are two such letters in the word $BOXES$ that have as many letters between them in the word as in the English alphabet,then which letter comes first?