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