D231123313223313132322331323111323132333132313233313311232313231323132211   >>    D23112331322331313232233132311132313233313231323331331123231323132313221   <<    D231123313223313132322331323111323132333132313233313311232313231323132213   >>      D231123313223313132322331323111323132333132313233313311232313231323132212   >>