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