Wherever all thirty of the fruits mentioned above, whose roots are in the worlds of Creation, Formation, and Making, can be found, it is a mitzvah to obtain them. For whoever does much is surely worthy of praise. However, wherever they are not all available, there should be no less than twelve types of fruit, corresponding to the fruit of the supernal tree, the Tree of Life. It is established as a Holy Tree in twelve directions, the secret of the twelve permutations of the Name, YHVH. For each of these the kavvanah should be one of the twelve permutations, according to the order mentioned above....
Thirty Sacred Fruits from the Three Worlds of Being
Peri Etz Hadar 4:23