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