The tool may be shifted in {HEAD ~ different positions} and {TAIL ~ orientations} effective to provide an efficient cleaning action on the article to be cleaned 
The tool may be shifted in { HEAD ~ different positions } and { TAIL ~ orientations } effective to provide an efficient cleaning action on the article to be cleaned
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH