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