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