D2122132313112331311221123133313232213331313331323221123313232233112111   >>    D212213231311233131122112313331323221333131333132322112331323223311211   <<    D2122132313112331311221123133313232213331313331323221123313232233112113   >>      D2122132313112331311221123133313232213331313331323221123313232233112112   >>