D1121323223313223313112113313231133132333132333132313231333132322211221   >>    D112132322331322331311211331323113313233313233313231323133313232221122   <<    D1121323223313223313112113313231133132333132333132313231333132322211223   >>      D1121323223313223313112113313231133132333132333132313231333132322211222   >>