The removable substrate holder may be loaded/unloaded away from {HEAD ~ the substrate boat} with {TAIL ~ susceptors} 
with
The removable substrate holder may be loaded / unloaded away from { HEAD ~ the substrate boat } with { TAIL ~ susceptors }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL