The book says that a sentence is a word or group of words that
expresses a complete thought.

In my place, Loon, Bohol, repeating the word "ang"
many times (the longest is 7) can form a sentence.
A sentence for me is a group of words that can be understood.

The lead question is: "Nganong nahog man nang bata?"

Answer: Ang ang, ang ang ang, ang ang.

"Alang-alang, ang ang-ang (steps), alang-alang.

This is a very acceptable form in Loon, Bohol. Meaning, it can be understood.
Can this give way to the Guiness Book? Any bloody retaliations? Hehehehe.