Juku built a circuit diagram that is shown in the figure using six identical resistors of resistance R=\SI10\ohm, four identical lamps of resistance r=\SI20\ohm and a voltage source with an electromotive force E=\SI5\volt. Calculate the power dissipated by each lamp (in the figure marked as 1, 2, 3, 4). Do not account for internal resistance of the voltage source.
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