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