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