{HEAD ~ The eccentrics} are out of {TAIL ~ phase} with each other corresponding to the out of phase between pair of cranks 
are out of
{ HEAD ~ The eccentrics } are out of { TAIL ~ phase } with each other corresponding to the out of phase between pair of cranks
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH