Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to install shiplap [title] Find the vertical studs behind the drywall. [step] Run an electronic stud finder horizontally along the wall until you can locate the studs. The stud finder will flash an led bulb or emit a beeping sound when it's placed over a stud.

Ending1: [title] Identify studs in the wall that you wish to install your shiplap in. [step] Tap on the first stud, then walk towards the wall. Ending2: [substeps] If you can't find the vertical studs, you can see them by drawing a straight line across the wall with a pencil. To provide a smooth 180 degree angle to the vertical studs, run the wiring through the horizontal studs where they meet. Ending3: [substeps] Its primary function is to corder the stud so that it goes in the direction of the wall's seams. [title] Locate the first row of studs. Ending4: Work slowly so that you can be precise, and aim to mark the exact center of each stud. [substeps] Use a pencil to place a light mark at the center of each stud.

Answer format: ending1/ending2/ending3/ending4