For {HEAD ~ the rolling granulation}, a granulator such as {TAIL ~ a pan granulator} and a drum granulator may be used 
For { HEAD ~ the rolling granulation } , a granulator such as { TAIL ~ a pan granulator } and a drum granulator may be used
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH