"What is it? Did you figure something out?" Kang Oh asked.

"This is the Parmarl Underground Labyrinth, right?"

"Yeah, what about it?"

"In the ancient language, ru means east, ma means west, pa means south, and bal means north," Eder said.

"Oho."

"Aha."

As soon as they heard his explanation, Kang Oh and Sephiro felt like a light bulb had gone off in their heads.

In the ancient language, Parmarl meant southeast and west/east.

Of course, they couldn't solve the riddle with just this at their disposal.

But when they looked at the map...!

The labyrinth was shaped like a rectangle, and there was a staircase at each corner. 

In total, there were four stairways in the labyrinth. 

There were stairs in the north, south, east, and west.

Thus, if they went through the southern stairway, and then made their way through the eastern, western, and eastern stairway, then they'd clear the labyrinth. 

"This must be the northern stairway."

Kang Oh pointed at a spot on the map; he was pointing at the stairs that led to the upper floor, or the entrance of the labyrinth.

"That sounds right. That's the only stairway that goes upstairs. All the other...