D1313331322132333132333132312312323331323223313113313232213231312321   >>    D131333132213233313233313231231232333132322331311331323221323131232   <<    D1313331322132333132333132312312323331323223313113313232213231312323   >>      D1313331322132333132333132312312323331323223313113313232213231312322   >>