 <h4 id="custom_DNA">4) DNA with covalent modifications alphabet</h4>
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ALPHABET "DNA with covalent modifications" DNA-LIKE

# Core symbols
A "Adenine" 8510A8 ~ T "Thymine" A89610
C "Cytosine" A50026 ~ G "Guanine" 313695
m "5-Methylcytosine" D73027 ~ 1 "Guanine:5-Methylcytosine" 4575B4
h "5-Hydroxymethylcytosine" F46D43 ~ 2 "Guanine:5-Hydroxymethylcytosine" 74ADD1
f "5-Formylcytosine" FDAE61 ~ 3 "Guanine:5-Formylcytosine" ABD9E9
c "5-Carboxylc