- Flip by clicking the box or using the down arrow key. Up arrow key will flip back.
- Skip by typing a number in the box below and pressing enter.
- Move between cards using the buttons above and the left and right arrow keys.
Unknown white; snowy; pure; bright; empty; blank; plain; clear; to make clear; in vain; gratuitous; free of charge; reactionary; anti-communist; funeral; to stare coldly; to write wrong character; to state; to explain; vernacular; spoken lines in opera; surname