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