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