Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to open combination locks without a code [title] Familiarize yourself with the lock. [step] A lock has three main components. The shackle is the u-shaped piece which attaches it to an object.

Ending1: [title] Use your thumb to turn the shackle. [step] Wrist shackle is the u-shaped piece from that lock. Ending2: The shackle was originally the padlock that will be used as the lock handle. The shackle is a small piece of wood that attaches the shackle to something that is actually a lock. Ending3: For example, a lock which attaches to a door can easily be unscrewed by hand and the shackle attached to a doorknob can be unscrewed using a small hand. Lock locks only have to be installed with the shackle attached to them. Ending4: The dial is the portion with numbers that turns. The body is the rest of the lock.

Answer format: ending1/ending2/ending3/ending4