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