Matt and Jackie have three differently-colored keys and knobs. They need to use one combination of key and knob to open the door. They organize all of the available combinations into a grid of possibilities and calculate that they have 9 total combinations. As they attempt each combination, they mark down which combination was used until they find the working one.
Jackie, Inez, and Matt have to use one combination of switch, lever, and button in order to obtain the crystal. They create a tree using the Squak Pad to display all of the possible combinations and try each one. When none of them work, Delete unintentionally tells them that there is a hidden brown button. They add the brown button to the possible combinations and find the correct combination.