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