Unscramble PROSI into words.

spiro estimated tile points: 7

piro estimated tile points: 6 piso estimated tile points: 6 risp estimated tile points: 6 spor estimated tile points: 6 sori estimated tile points: 4

pir estimated tile points: 5 poi estimated tile points: 5 pro estimated tile points: 5 psi estimated tile points: 5 rip estimated tile points: 5 sip estimated tile points: 5 sop estimated tile points: 5 iso estimated tile points: 3 rio estimated tile points: 3 roi estimated tile points: 3 sir estimated tile points: 3 sri estimated tile points: 3