Find a missing number?

Question

Find a missing number?

pattern 1: North(4)South(9)East(6) West(6)

pattern 2: North(7)South(8)East(?) West(4)

 

answer is 14, why?

Answer 1

Pattern 2 (actually iteration 2 as pattern 2 implies a different pattern) N(7) S(8) E(2) W(4).

 

The pattern is -N+S+1 = E, the units digit of E²  = W