4 Letters
These letters might help people who are lost while traveling
N, E, W, S
Commonly used for movement in PC games
W, A, S, D
The orange line of the MTA
B, D, F, M
Out of 13, 9 rank with numbers while the last four rank with letters
J, Q, K, A
These four letters are the least used in the English language
J, Q, X, Z