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