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