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