Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
period of time =
1.
Š¿
2.
—ñ
3.
Œˆ
4.
Šú
ƒŒƒxƒ‹3.
•ÏX
SDAL“‡‰pŒêŠwZ