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