Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to build a garden shed [title] Choose and measure your garden shed's location. [step] It should ideally be on level ground. [title] Use solid concrete blocks that are 4 inches (10 cm) and 2 inches (5 cm) thick to build a foundation for your wooden shed.

Ending1: [substeps] Dig a shallow hole for your first block's location. Use a hand tamper to make the soil level and compact. Ending2: [title] Determine the space you intend to use your shed to accommodate. [step] The type of soil or different type of environment may require different measurements. Ending3: [title] Mark your roof below the concrete slab line. [title] Measure vertical and horizontal across the edges of the shed to determine the beginning of the roof. Ending4: [step] First add some earth in the area to create concrete. The concrete slab should look like a cut out of concrete slab.

Answer format: ending1/ending2/ending3/ending4