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