The feed mixer apparatus 6 wherein {HEAD ~ said first auger} includes {TAIL ~ a first set} of knives 
includes
The feed mixer apparatus 6 wherein { HEAD ~ said first auger } includes { TAIL ~ a first set } of knives
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH