D233123313113313113313222332313231323132322331323132211233132313231323121221   >>    D23312331311331311331322233231323132313232233132313221123313231323132312122   <<    D233123313113313113313222332313231323132322331323132211233132313231323121223   >>      D233123313113313113313222332313231323132322331323132211233132313231323121222   >>