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