a housing having {HEAD ~ a first dispensing conduit} for dispensing said first component and a second dispensing conduit for dispensing said {TAIL ~ second component} 
a housing having { HEAD ~ a first dispensing conduit } for dispensing said first component and a second dispensing conduit for dispensing said { TAIL ~ second component }
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL