Letter Sequences Mystery Cache

The cache is NOT at the posted coordinates, but it is within two miles.

If you are able to figure out the rules for the following sequences, you'll be able to find the cache!

A = {E, O, E, R, E, ...}

B = {H, H, L, B, B, ...}

C = {JY, FY, MH, AL, MY, ...}

D = {DE, PA, NJ, GA, ...}

E = {WY, WI, WV, ...}

F = {GW, JA, TJ, JM, ...}

The cache is located at N 40º ZY.XWV W 85º 5U.TSR, where:
Z = the second letter of C₇ minus A₆
Y = the second letter of F₁₃ plus B₆
X = the second letter of D₉ minus the second letter of E₅
W = the first letter of E₄₈ plus B₉
V = the second letter of F₅ minus the second letter of D₅₀
U = the second letter of F₂₂ plus A₉
T = the second letter of C₉ minus A₁₆ plus the second letter of E₄
S = the second letter of F₁₅ plus B₂₄
R = B₄₈ plus A₁₀₀