Your goal is to find the secret four-color code. The following colors are possible: black, red, yellow, white, green, brown.
Some guesses have already been made. I will provide feedback for each guess made with which it is possible to unambigiously determine the secret code.

Previous Guesses:
Guess: ['red', 'black', 'yellow', 'white']. Hint: three colors are in the correct positions.
Guess: ['black', 'black', 'red', 'red']. Hint: one color is in the secret code but in the wrong position.
Guess: ['black', 'black', 'green', 'brown']. Hint: one color is in the secret code but in the wrong position.
Guess: ['red', 'green', 'yellow', 'white']. Hint: three colors are in the correct positions.
A B C D
red, brown, yellow, white brown, red, red, red black, brown, white, yellow white, yellow, yellow, yellow