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Cutting the telegraph-wire was a favourite amusement of the Manipuris ; and even during the small revolution in September , 1890 , they had demolished the line in two or three directions . Since the center of mass is directly beneath the point of support in each case , one can find it by using a plumb bob to draw vertical lines from two or more points of support - the lines intersect at the center of mass . Each story line involves two or more people who supposedly love one another fighting each other in a manner analogous to the dogs in the Octavio sequence . When we got there the firing from the enemy 's side had ceased , but , as I afterwards heard , the spies that evening had reported a large gathering of the rebels , and so the troops kept on the lines for two or three hours , until the moon rose . " All the trucks that arrive there are inspected , and form lines for two or three hours . Facilities can add extra personnel and operate their production lines in two or even three shifts . Vent pipes from two or more safety-relief devices on the same unit , or similar lines from two or more different units may run into a common discharge header , if the capacity of the header is at least equal to the sum of the capacities of the individual discharge lines . Two hours later at 8 a.m ., you will be zipping through the same line in two or three minutes .