A second building block is added to the vessel under conditions that allow the coupling of the first and second building blocks, and {HEAD ~ the rotor} is spun at {TAIL ~ a speed} sufficient to expel the liquid from the vessel 
is spun at
A second building block is added to the vessel under conditions that allow the coupling of the first and second building blocks , and { HEAD ~ the rotor } is spun at { TAIL ~ a speed } sufficient to expel the liquid from the vessel
OTH OTH OTH OTH OTH 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 REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH