網址: https://static.vecteezy.com/system/resources/previews/007/739/321/original/letter-x-of-the-english-alphabet-latin-letters-hand-drawn-alphabet-letters-signs-doodle-font-illustration-letters-of-the-alphabet-in-cartoon-style-for-kids-vector.jpg
網址2: https://ar.inspiredpencil.com/pictures-2023/the-letter-x-in-blue
