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div_There_are_a_few__.html  We_can_add_congruences_Notice__.html  div_Here_is_an_example__.html  figures/Screen Shot 2016-03-06 at 8.57.39 PM/Screen Shot 2016-03-06 at 8.57.39 PM.png  div_Now_here_are_some__.html  figures/Screen Shot 2016-03-06 at 9.06.18 PM/Screen Shot 2016-03-06 at 9.06.18 PM.png  figures/Screen Shot 2016-03-09 at 9.01.45 AM/Screen Shot 2016-03-09 at 9.01.45 AM.png