D3313221123132313231323233231323223313231323221333132313233112121   >>    D331322112313231323132323323132322331323132322133313231323311212   <<    D3313221123132313231323233231323223313231323221333132313233112123   >>      D3313221123132313231323233231323223313231323221333132313233112122   >>