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