So for this logic puzzle you will figure out what I wear during each month. My options are t-shirt (t), sweatshirt (s), and coat (c). I only wear one. Therefore I do not wear both a t-shirt and a sweatshirt. Beware, I do not always dress according to season or months of the year. Just like in January I wear a t-shirt even though it is cold. Adjacent does NOT include diagonals.
Solution is in comments. Enjoy!