D23112313233313223313132322331323132313232211331323133311211321   >>    D2311231323331322331313232233132313231323221133132313331121132   <<    D23112313233313223313132322331323132313232211331323133311211323   >>      D23112313233313223313132322331323132313232211331323133311211322   >>