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