Solve the following puzzles by performing the corresponding tasks:
Puzzle 28 Place a green sphere at the end of the bottom string. Place a green sphere at the end of the middle string. Switch green color to white color. Switch white color to red color. Collapse the bottom string using a red sphere. Add a red sphere to the middle of the middle string. Collapse that string with a red sphere. Collapse the upper string with a red sphere. Collapse the resulting string on the left using a red sphere.
Puzzle 38 Place a blue sphere on the right side of the light blue ones. Place a red sphere between the blue and the green at the right end of the string. Place a blue sphere between the red and light blue ones. Collapse the string with a light blue sphere. Place a green sphere to the left end of the middle string. Place a red sphere between the green and black ones. Collapse the left string with a white sphere. Collapse the last string with a black sphere. Eliminate the green spheres with the wild ball.
Puzzle 40 Place a blue sphere in the bottom string. Place a blue sphere in the resulting left string to collapse blue and yellow colors. Switch the blue color to green color. Collapse the bottom string using a green sphere. Collapse the middle string with a yellow sphere. Collapse the upper string with a green sphere. Eliminate the remaining string with a green sphere. Puzzle 42 Collapse the bottom right string with a purple sphere. Collapse the bottom left string with a red sphere. Switch the blue color to white color. Collapse the left string with a purple sphere. Collapse the upper left string with a red sphere. Switch the white color to yellow color. Switch the yellow color to red color. Eliminate the bottom right string with a red sphere. Eliminate the upper string with a purple sphere (the red ones will collapse).
