In the given code,
Z = 1,
Y = 2,
X = 3,.....,  C = 24,
B = 25,
A = 26.
So, Go = 20 + 12 = 32 and
SHE = 8 + 19 + 22 = 49.
Similarly, SOME = 8 + 12 + 14 + 22 = 56.