Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to break a lock [title] Determine whether your padlock has a single-or double-lock shackle. [step] In most cases, this will be impossible to determine by just looking at the padlock. Check its packaging, contact its manufacturers, or research it online to discover what kind of shackle it has.

Ending1: [substeps] Most padlocks are single-lock shackles. A single-lock shackle is secured shut on one side, whereas a double-lock shackle is secured shut on both sides. Ending2: There is a wide variety of locked-in locks. [substeps] You can break a lock with a single-or double-lock shackle as long as you are not applying pressure and both sides do not have metal or a locking ball. Ending3: [title] Reach into the lock without using your fingers. [step] Hand shackle locks come with a combination latch on either side of the lock. Ending4: [substeps] Beware that some padlocks come with a single-or double-lock shackle. These locks have chains on both sides of the shackle and screw holes in the chain on all sides.

Answer format: ending1/ending2/ending3/ending4