{HEAD ~ The rotational drive force} of the second shaft in the opposite direction is transmitted to {TAIL ~ the drive shaft} via a second one way clutch unit and a second power transmitting mechanism 
is transmitted to
{ HEAD ~ The rotational drive force } of the second shaft in the opposite direction is transmitted to { TAIL ~ the drive shaft } via a second one way clutch unit and a second power transmitting mechanism
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH