The machine has a plurality of printing cylinders for mounting the printing plates, wherein {HEAD ~ each printing cylinder} has {TAIL ~ a respective side register} 
has
The machine has a plurality of printing cylinders for mounting the printing plates , wherein { HEAD ~ each printing cylinder } has { TAIL ~ a respective side register }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL