The board has 4 vertical words (top-to-bottom): STRING, ALONE, PHONE, and CRATE.
Click a letter to steal it. You may only steal if the remaining letters
in that column still form a valid English word.
Use the stolen letters to build new words and press Submit word.
After a valid word, the board resets so you can try new words from a fresh set of letters.
You win when you find at least one 3-letter, 4-letter, and
5-letter word. A 6-letter word is a bonus.