It's easy to beat a level 70 and of course you can do it. Do not need much explanation, you just massaged the red arrows on the left and right.
The correct pattern is: R R R R L L R L R R
Note: Right = R, Left = L
100 Floors Level 71 Explanation:
Change the patterns in each of the 3 black spots so that it is the complete opposite of the pattern across from each spot, put the 3 lined pattern in the middle one to open the door.
An easy way to beat floor 71 is to press the first blank spot 4 times, second blank spot 5 times, and the third blank spot 6 times.
The top middle pattern should be the complete opposite of the bottom middle pattern. Since the bottom middle pattern is 6 short lines, the top should be 3 long lines.
Now continue to the 100 floors level 72-73 explanation, or back to the 100 floors level 68-69-explanation