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