These inner rollers 68 and 70 contact {TAIL ~ the inner side} 72 of {HEAD ~ the handrail} 10 
These inner rollers 68 and 70 contact { TAIL ~ the inner side } 72 of { HEAD ~ the handrail } 10
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH