D2122132313112331311221123133313232213331313331323221123313233313231232211   >>    D212213231311233131122112313331323221333131333132322112331323331323123221   <<    D2122132313112331311221123133313232213331313331323221123313233313231232213   >>      D2122132313112331311221123133313232213331313331323221123313233313231232212   >>