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