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What are the base degenaracy codes that you use (eg. R, W, K, V, S)?

The standard IUB codes for degenerate bases are:

A = Adenosine
C = Cytosine
G = Guanosine
T = Thymidine
B = C,G, or T
D = A,G, or T
H = A,C, or T
V = A,C, or G
R = A or G (puRine)
Y = C or T (pYrimidine)
K = G or T (Keto)
M = A or C (aMino)
S = G or C (Strong -3H bonds)
W = A or T (Weak - 2H bonds)
N = aNy base

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