+--+--+ | | +-----=--+--+ | | +--+--+--+--+--+ + | | | 3 +--+ b1--+ | | 1a +--+--+ \ | | +--+ +--+--+--+ | + | + + | | +--+--=--+--+ | | | +--+--+ 1 = Moria (Part 1) {5-15} 3 = Moria (Part 3) {5-15}