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