A short bookmarklet that adds a timer and JavaScript console, especially for mobile browsers.
It will load the list of valid words, currently 2,309 words. You can use JavaScript regular expressions to search through them.
b is a regular expression for the current line (green), m is a regular expression for letters to include (yellow), x is a regular expression for letters to exclude (dark gray).
Future enhancements might include using the game's localStorage to figure out the regular expressions.