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