The recess has {HEAD ~ an opening} at the front of the housing and a first part of the housing for {TAIL ~ insertion} of the cartridge protrudes in a direction enclosing an angle with a second part of the housing 
for
The recess has { HEAD ~ an opening } at the front of the housing and a first part of the housing for { TAIL ~ insertion } of the cartridge protrudes in a direction enclosing an angle with a second part of the housing
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH