Need some knowledge with chemicals? Do complete this
file with the element (question) and its symbol (answer),
separated by a <TAB>.
Argon	Ar
Carbon	C
Gold	Au
Helium	He
Iron	Fe
Kalium	K
Natrium	Na
Neon	Ne
Mercury	Hg
Nitrogen	N
Oxygen	O
Silver	Ag
Sulful	S
Uranium	U