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Example time series of loop size for 
for a (a) non-disassociating and a (b) dissociating case (
), for M = 5 machines on a substrate of length L = 50. The dark solid line shows the average of the sizes of the M loops, and the red and blue dashed lines indicate the width (one standard deviation) of the distribution of loop sizes subtended by the machines as a function of time. As in all cases mentioned in this article, time is in units of 
.
