D23112331322331313231323223313133112323132322331312323133313221121   >>    D2311233132233131323132322331313311232313232233131232313331322112   <<    D23112331322331313231323223313133112323132322331312323133313221123   >>      D23112331322331313231323223313133112323132322331312323133313221122   >>