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