1 Tex. Admin. Code § 79.44
Where a name or a unit of names consists of initials only or letters of the alphabet, the combination of initials will be considered as one word for the purpose of applying name availability rules.
(1) Example: The following are different "words" and are not considered to be similar:
Source Note:The provisions of this §79.44 adopted to be effective January 1, 1976; amended to be effective September 15, 1981, 6 TexReg 3249; amended to be effective January 2, 1992, 16 TexReg 7469; amended to be effective October 20, 2004, 29 TexReg 9671.