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