Your goal is to find the secret four-color code. The following colors are possible: black, purple, blue, yellow, white, 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: ['yellow', 'white', 'blue', 'brown']. Hint: one color is in the correct position and three colors are in the secret code but in the wrong position.
Guess: ['blue', 'blue', 'yellow', 'brown']. Hint: one color is in the correct position and two colors are in the secret code but in the wrong position.
Guess: ['yellow', 'blue', 'brown', 'white']. Hint: four colors are in the secret code but in the wrong positions.
A B C D
yellow, white, yellow, brown black, purple, brown, yellow blue, yellow, black, white brown, white, yellow, blue