The children went up the curved staircase, found a bench, and sat down.
“Maybe we should ask someone for help?” suggested
Gelio.
“No!” Muko was adamant. “We need to figure it out. C'mon you lot, it's got to be simple! Think about it. The library has four wings – North, South, East and West - like the points on a compass. Our code starts with 'N'. It must stand for North, so we need to go to the Northern Wing.”
Amartia gave her approval to this interpretation. “Yes,
the other cards I saw had only four distinct values in first