{HEAD ~ The system} also includes {TAIL ~ a voltage source} providing a direct current level voltage with respect to an electric ground and a switching circuit adapted to operate the motor 
includes
{ HEAD ~ The system } also includes { TAIL ~ a voltage source } providing a direct current level voltage with respect to an electric ground and a switching circuit adapted to operate the motor
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH