{HEAD ~ The error path} includes a first sub path, a second sub path, {TAIL ~ a second synthesizer} and a third sub path 
includes
{ HEAD ~ The error path } includes a first sub path , a second sub path , { TAIL ~ a second synthesizer } and a third sub path
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH