{HEAD ~ The friction damper} includes {TAIL ~ a plate} underlying radially outer shrouds of two adjacent airfoils  
includes
{ HEAD ~ The friction damper } includes { TAIL ~ a plate } underlying radially outer shrouds of two adjacent airfoils
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH