One front side of the cartridge next to the opening of the recess is still visible after {TAIL ~ insertion} and can also protrude over {HEAD ~ the recess} 
One front side of the cartridge next to the opening of the recess is still visible after { TAIL ~ insertion } and can also protrude over { HEAD ~ the recess }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD