Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to fix a jammed manual stapler [title] Pick up the stapler and turn it upside down. [title] Put your finger on the metal part, slightly behind where the staple is stuck. [title] Find out how badly it is stuck.

Ending1: [step] If the grease comes away easily, the stapler probably needs to be replaced. But if it sticks up more than a bit, replace it. Ending2: [step] If it is, it will need to be repaired. [title] Take a sterile cotton swab and blot the stuck button down. Ending3: [step] Generally, sticking a stapler in an inconspicuous place can cause it to wiggle, so feel around carefully and try to get out completely. If there is no rust, the manual probably was not stuck. Ending4: [step] Use this knowledge to determine which method will help. [title] Put a paper clip into the place where the staples come out.

Answer format: ending1/ending2/ending3/ending4