Each of the capacitors is formed of {HEAD ~ a series circuit} of {TAIL ~ two substantially equal size individual capacitors} forming a capacitor pair 
Each of the capacitors is formed of { HEAD ~ a series circuit } of { TAIL ~ two substantially equal size individual capacitors } forming a capacitor pair
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH