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