IUPAC makes no specific recommendation for differentiating types of noncovalant bonds. When it is necessary to differentiate, this article uses "*" for the Hogsteen pair.

Top, a GoC base pair with three hydrogen bonds. Bottom, an AoT base pair with two hydrogen bonds. Non-covalent hydrogen bonds between the bases are shown as dashed lines. The wiggly lines stand for the connection to the pentose sugar and point in the direction of the minor groove.