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