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