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