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Hydrogen
H2
Oxygen
O2
Helium
He
Boron
B
Sulfur
S
Carbon
CO2
Cobalt
Co
Copper
Cu
Chromium
Cr
Phosphorus
P
Argon
ar
Nitrogen
N
Nickel
ni
Neon
ne
Silicon
Si
lithium
Li
Sodium
Na
Potassium
K
Tungsten
W
Uranium
U