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