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