D1212121221323132313232332313232233132313233313331313231333132322131   >>    D121212122132313231323233231323223313231323331333131323133313232213   <<    D1212121221323132313232332313232233132313233313331313231333132322133   >>      D1212121221323132313232332313232233132313233313331313231333132322132   >>