Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
guard against =
1. ˆæ
2. ŽŠ
3. Œx
4. –Y

ƒŒƒxƒ‹6. •ÏX
SDAL“‡‰pŒêŠwZ