Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
guard against =
1. Œx
2. |
3. •À
4. –Y

ƒŒƒxƒ‹6. •ύX
SDAL“‡‰pŒêŠwZ