It occasionally appears as a glitched size label (e.g., "17433X-Large") on retail sites like Walmart.
Pofeuu Cute Rabbit Print Men's Workout Tank Tops ... - Walmart
In some sports betting databases, it represents a specific "form" sequence for a horse (indicating finishing positions in previous races).
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.