Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
period of time =
1.
2. Š¿
3. Šú
4. —r

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ