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