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