In typical themed American-style crosswords, the theme is created first, as a set of symmetric long Across answers will be needed around which the grid can be created. Since the grid will typically have 180-degree rotational symmetry, the answers will need to be also: thus a typical 15×15 square American puzzle might have two 15-letter entries and two 13-letter entries that could be arranged appropriately in the grid (e.g., one 15-letter entry in the third row, and the other symmetrically in the 13th row; one 13-letter entry starting in the first square of the 6th row and the other ending in the last square of the 10th row). The theme must not only be funny or interesting, but also internally consistent. In the April 26, 2005 by Sarah Keller mentioned above, the five themed entries contained in the different parts of a tree: SQUAREROOT, TABLELEAF, WARDROBETRUNK, BRAINSTEM, and BANKBRANCH. In this puzzle, CHARTER OAK would "not" be an appropriate entry, as all the other entries contain different parts of a tree, not the name of a kind of tree. Similarly, FAMILY TREE would not be appropriate unless it were used as a "revealer" for the theme (frequently clued with a phrase along the lines ""...and a hint to...""). Given the existing entries, SEED MONEY would also be unacceptable, as all the other theme entries "end" in the part of a tree as opposed to beginning with it, though the puzzle could certainly be changed to have a mix of words in different positions.