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