The cartridge after {HEAD ~ insertion} into the first part of {TAIL ~ the housing} is nearly completely or completely enclosed by the first part of the housing 
The cartridge after { HEAD ~ insertion } into the first part of { TAIL ~ the housing } is nearly completely or completely enclosed by the first part of the housing
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH