Dragging & Dropping multiple items can be frustrating on small touch
devices while it's fine on tablets and desktops.
This is where a Slide & Connect scheme can close the gap in the UX.
Slide & Connect
Slide the upper and lower section until they match and tap on connect to join them together. This principle allows for endless pairs on all small devices without the need for a lot of space like a regular Drag & Drop.
After two sections are connected they slide to the side and stay together as one visual unit, but are still available for changes and can be disconnected or rearranged.
Answered everything right? Now is the time to check it out, see your right and wrong answers in a quick and rememberable fashion for a steep learning curve and even better results the next time.