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