The invention is not limited to any particular number of {HEAD ~ particular number} of passageways or positioning of {TAIL ~ passageways} along the yoke 
The invention is not limited to any particular number of { HEAD ~ particular number } of passageways or positioning of { TAIL ~ passageways } along the yoke
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH