Four similar gravitational sub systems connected with one another to keep rotational energy substantially constant caused by gravity as {HEAD ~ a result} of the combined interaction between two elements having {TAIL ~ different groups} of gravity masses and different speeds 
Four similar gravitational sub systems connected with one another to keep rotational energy substantially constant caused by gravity as { HEAD ~ a result } of the combined interaction between two elements having { TAIL ~ different groups } of gravity masses and different speeds
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH