Platinum Peotatinium Potassium Praesedymium
Platinum Potassium Plutonium Phosphorous
Ruthenium Radon Rhenum Radium
Radon Rhenum Rubidium Rhodium
Rubidium Radon Rhodium Radium
Platinum Peotatinium Plutonium Promethium
Platinum Peotatinium Praesedymium Promethium
Praesedymium Promethium Phosphorous Plutonium
Plutonium Palladium Praesedymium Potassium