Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
period of time =
1. —û
2. Šú
3. ˆÀ
4. ’Œ

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ