a carrier that rotatably supports {HEAD ~ the planetary gear} in such a state so as to be coupled to {TAIL ~ the drive shaft} 
a carrier that rotatably supports { HEAD ~ the planetary gear } in such a state so as to be coupled to { TAIL ~ the drive shaft }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL