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