Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
boundary =
1. ¸
2. ¨
3. ‹«
4. ‰t

ƒŒƒxƒ‹5. •ύX
SDAL“‡‰pŒêŠwZ