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