The silencer of FIG 1 has {TAIL ~ a pot} like {HEAD ~ housing} 1 with a cylindrical pot casing 2 and with a pot bottom 3 
The silencer of FIG 1 has { TAIL ~ a pot } like { HEAD ~ housing } 1 with a cylindrical pot casing 2 and with a pot bottom 3
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH