Creating a box or circle for Hebrew learning cards

I am trying to create cards with either a box or a circle, where the circle represents and consonant, and under the circle, I will have a specific Hebrew Nikkud, as well as a possible letter after it. If I create such using Unicode in Word, when I cut and copy it to ANKI, the formatting is lost. As an example, how would I create a circle or a box that are blank in the inside, but have a Pataj at the bottom and a Yud that follows the circle? I have full access to a Hebrew keyboard layout, so it is not difficult to create the Nikkud, ָ ַ ְ . Many thanks!