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