{HEAD ~ The guide member} is held in position by {TAIL ~ a column support} between the housing and the upper side of the guide 
is held by
{ HEAD ~ The guide member } is held in position by { TAIL ~ a column support } between the housing and the upper side of the guide
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH