Is it possible to transmit private student loans into one loan federal student?

I have about 50,000 for private Student loans and consolidate the current economic environment, nobody, or to refinance my loan. I wonder, if possible, their role “on” to a federal Student loan. Any help is welcome!

• Is it possible to transmit private student loans into a federal student loan?
• Is it possible to transmit private student loans with a federal student loan?
• Is it possible to transfer private student loans into a federal student loan?
• Is it attainable to transfer private student loans into a federal student loan?
• Private student loans are federal and are combined into one loan?
• Why I can not consolidate federal and private student loans into one loan?
• Is it possible to transmit student loans private student loan state?
• Is it possible to consolidate both federal and private student loans into one consolidation, or do I have to?
• What is a great loan consolidation system for Federal and Private student loans?
• Student loans and student loan consolidation Private Federal