They say it lightly. You carry it forever.
Praise makes you too happy. A correction, you can't recover from.
40jk = 4 letters, 0 seconds. Joker & King.
The long version (mechanics, records, real pairs) is on the main site.
16 Relations, main site
Four letters can change every time you take the test. Read it without deciding anyone is a type. Read first: about typing