original: upon becoming a tropical cyclone , the depression maintained multiple cloud swirls within a common center .
simplifications: upon becoming a tropical cyclone , the depression maintained multiple cloud swirls within a common center . the storm became a tropical cyclone and had multiple cloud swirls within it 's center . upon becoming a tropical cyclone , the depression always has multiple cloud swirls within a common center . upon becoming a tropical cyclone , the depression maintained multiple cloud swirls within a common center . when the depression became a tropical cyclone , it had many cloud swirls in the same center . at the time it became a tropical cyclone , the depression featured multiple cloud swirls within the defined center . upon becoming a tropical cyclone , the depression maintained multiple cloud swirls within a common center . upon becoming a tropical cyclone , the depression maintained multiple cloud swirls within a common center .