Scandium Selenium Samarium Strontium
Silver Selenium Silicon Sulphur
Silver Silicon Sodium Scandium
Radon Uranium Rhenium Radium
Rubidium Rhodium Radium Ruthenium
Sulphur Scandium Silicon Strontium
Sodium Silver Neptunium Nickel
Selenium Samarium Silver Sulphur
Argon Silver Gold Tin
Rhenum Rhodium Ruthenium Rubidium