# IUB codes for nucleotides
# Substitution is for OR'd A=1, C=2, G=4 and T=8
#Code   Num     Include Mnemonic
A	1	A	adenine
B	14	CGT	not_adenine
C	2	C	cytosine
D	13	AGT	not_cytosine
G	4	G	guanine
H	11	ACT	not_guanine
K	12	GT	keto_base
M	3	AC	amino_base
N	15	ACGT	any_base
R	5	AG	purine_base
S	6	CG	strong_bond
T	8	T	thymine
U	8	T	uracil
V	7	ACG	not_thymine/uracil
W	9	AT	weak_bond
X	15	ACGT	unknown
Y	10	CT	pyrimidine
