Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to troll on minecraft [title] You can make a simple obsidian trap, and it would be impossible to escape on survival. [step] You take a piece of flat land, about five squares to five squares. In each corner, you add three pieces of obsidian.

Ending1: Think of something round, but don't make it too round. At the corners, you add five cobblestone blocks. Ending2: Repeat this until you have a dozen to do with. [title] Rock the two pieces of obsidian together. Ending3: [title] The first square with the four pieces of obsidian is the hardest. [step] This will work on the other two squares in the game. Ending4: After making four pillars, you then make a roof. Make it low enough, so you can't jump, but you can move around.

Answer format: ending1/ending2/ending3/ending4