D23112313233313223313132322331323132333132312121122112323221121   >>    D2311231323331322331313232233132313233313231212112211232322112   <<    D23112313233313223313132322331323132333132312121122112323221123   >>      D23112313233313223313132322331323132333132312121122112323221122   >>