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