What are the different power-up combinations?

It is possible to combine adjacent power-ups to create even more powerful effects! Swipe a power-up into an adjacent power-up to create the following combinations:

• Rocket + Rocket: clears one row and column in a cross shape.
• Rocket + Bomb: rockets clears three rows and columns in a cross shape.
• Rocket + Paper Plane: the combined rocket will launch at the location the paper plane lands.
• Rocket + Color Bomb: replaces targeted pieces with rockets that will launch in random directions.
• Bomb + Paper Plane: bomb will detonate at the location the paper plane lands.
• Bomb + Bomb: creates a bigger explosion than a single bomb.
• Bomb + Color Bomb: replaces targeted pieces with bombs and detonates them.
• Paper Plane + Paper Plane: launches three paper planes.
• Paper Plane + Color Bomb: replaces targeted pieces with paper planes and launches them.
• Color Bomb + Color Bomb: hits all tiles in the level.