Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
boundary =
1. ‹«
2. ‹å
3. Γ
4. ŒÌ

ƒŒƒxƒ‹5. •ÏX
SDAL“‡‰pŒêŠwZ