- Space
- Turn the card over, then answer “Knew it”
- 1–4
- Forgot · Hard · Knew it · Easy — or pick a meaning in a first test
- 0
- I don’t know (in a first test)
- Enter
- Continue, check a typed answer, next round
- K
- I already know this word
- P
- Hear the word (again, on a card asked by ear)
- C
- Count a typed synonym as right
- U
- Undo the last answer