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