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