In Kabbalah, Hebrew letters represent the spiritual forces that created existence. There are 72 three-letter sequences that, when meditated upon, can help the wearer overcome laws of human nature by summoning the powers of creation.
Our 5 current pedants are the following:

Love - Hey Hey Ayin

Happiness - Ayin Lamed Malech (ALM)

Freedom - Mem Tzadi Resh

Wisdom - Mem Lamed Hey

Protection - Aleph Lamed Daleth