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