The shape and {HEAD ~ materials} of interior 16 may reflect and direct {TAIL ~ the sanitizing agent} onto the doorknob 
The shape and { HEAD ~ materials } of interior 16 may reflect and direct { TAIL ~ the sanitizing agent } onto the doorknob
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH