The right pillar of the Tree is that of Mercy. It contains the tree's positive, active, bestowing, or masculine aspects. In it are the three Sephiroth Chokmah חכמה, Chesed חסד, and Netzach נצח. They represent aspects of creativity, each from the perspective of its own triad:
Of the Mother letters, this corresponds to Shin (ש), which in the Gra tree also connects the Sephiroth Chokmah and Binah.
[gra_tree]