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He
Helium
C
Carbon
N
Nitrogen
O
Oxygen
F
Fluorine
Ne
Neon
P
Phosphorous
S
Sulfur
Cl
Chlorine
Ar
Argon
Se
Selenium
Br
Bromine
Kr
Krypton
I
Iodine
Xe
Xenon
Rn
Radon