I need to get into this building. Next to the only door is a keypad with a simple 10-key numeric keypad.
I hear someone approaching so I hide in a nearby bush to observe.
They walk up to the door, pull out a piece of paper and start alternating between looking down at the paper and pushing buttons which causes the keypad to beep.
I listen closely and hear them push buttons in this alternating pattern:
beep beep-beep beep beep-beep beep beep-beep
They reach for the door as they push the last two buttons and I'm able to see that they push 1-2.
They hurry inside the door and in their haste they drop the paper. I wait a minute and then go pick it up and read the following: THE KEY TO UNLOCK THE BOX
What is the code to the door?