D1121323223313223313112113313231133132333132333132313231333133313232121221   >>    D112132322331322331311211331323113313233313233313231323133313331323212122   <<    D1121323223313223313112113313231133132333132333132313231333133313232121223   >>      D1121323223313223313112113313231133132333132333132313231333133313232121222   >>