Prefixes IV BACK.AGAIN 1.Re:Refuel,retranslate,reinforce,reconstruct,return 2.Retro:Retrograde,retrospect TOGETHERSAND: Co:co-exist,co-operate,co-education BETWEEN.Mutual Inter: interchangeble,interdependent,internet,interconnection,intercourseBACK, AGAIN 1．Re:Refuel, retranslate, reinforce, reconstruct,return 2．Retro:Retrograde, retrospect TOGETHER, AND: Co: co-exist, co-operate, co-education BETWEEN, Mutual Inter: interchangeble, interdependent, internet, interconnection, intercourse Prefixes IV