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