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