Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
elementary =
1.
‰c
2.
‘f
3.
‰ð
4.
•Ò
ƒŒƒxƒ‹5.
•ÏX
SDAL“‡‰pŒêŠwZ