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