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elements read
helium
carbon
nitrogen
oxygen
neon
sodium
magnesium
aluminium
silicon
sulphur
argon
calcium
iron
nickel
end  of elements
element Lithium off
element Beryllium off
element Boron  off
element Fluorine  off
element Phosphor off
element Chlorine off
element Potassium off
element Scandium  off
element Titanium off
element Vanadium off
element Chromium off
element Manganese off
element Cobalt off
element Copper off
element Zinc  off
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