{HEAD ~ The spraying device} is mounted on the base and has a mounting cover and {TAIL ~ an spraying ball} 
has
{ HEAD ~ The spraying device } is mounted on the base and has a mounting cover and { TAIL ~ an spraying ball }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL