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