Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
guard against =
1. —X
2. Œx
3. ¢
4. —‚

ƒŒƒxƒ‹6. •ÏX
SDAL“‡‰pŒêŠwZ