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