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