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