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