{HEAD ~ Each projector} consists mainly of {TAIL ~ an illuminating means}, a splitting means, red, green, and blue color display means, a luminous flux synthesizing means, and a projecting optical system 
consists mainly of
{ HEAD ~ Each projector } consists mainly of { TAIL ~ an illuminating means } , a splitting means , red , green , and blue color display means , a luminous flux synthesizing means , and a projecting optical system
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL 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 OTH OTH OTH OTH OTH