{HEAD ~ The ratio} of {TAIL ~ the MI2} of fraction to the MI5 of fraction may exceed 25000, or even 30000 
{ HEAD ~ The ratio } of { TAIL ~ the MI2 } of fraction to the MI5 of fraction may exceed 25000 , or even 30000
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH