Anne frank project
Another theme is to perservere when times get tough. Because they're being hunted like animals and they have to put up with each other, they show perseverance. Otherwise they will be found and killed and they don't want that. Also, food and other supplies are hard to get without someone sneaking it to you; that just makes everything else harder on you. Also, you have to think of all of the stress that would be put on you during this. Putting all of that together, you're basically dying slowly inside or being pushed slowly toward insanity.
Another theme for the whole play is to stick together. That would be hard to stay in a cramped place like that for two years. They almost got caught a couple of times, but they stayed strong through the whole thing by sticking together. They could have just given up and got everybody caught and killed, but they didn't because they worked together to survive.