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