{HEAD ~ The bridge} may comprise a first component, and {TAIL ~ a second component} engaged to said first component 
comprise
{ HEAD ~ The bridge } may comprise a first component , and { TAIL ~ a second component } engaged to said first component
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH