{HEAD ~ This invention} relates to floor covering installation equipment and to {TAIL ~ methods} of installing floor covering 
{ HEAD ~ This invention } relates to floor covering installation equipment and to { TAIL ~ methods } of installing floor covering
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH