{HEAD ~ The interior} of {TAIL ~ each} of the toys includes a gyroscope, which when operated creates considerable rotational momentum, tending to resist the movement of the toy by the user 
of
{ HEAD ~ The interior } of { TAIL ~ each } of the toys includes a gyroscope , which when operated creates considerable rotational momentum , tending to resist the movement of the toy by the user
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH