{HEAD ~ A variable speed motor} includes first and second main windings wound on a stator, and {TAIL ~ a relay} for performing a switching operation between serial/parallel connections of the first and second main windings to control motor speed 
includes
{ HEAD ~ A variable speed motor } includes first and second main windings wound on a stator , and { TAIL ~ a relay } for performing a switching operation between serial / parallel connections of the first and second main windings to control motor speed
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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