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

ƒŒƒxƒ‹6. •ÏX
SDAL“‡‰pŒêŠwZ