D1212121221323132313232332313132313233231323223313232233131232313221   >>    D121212122132313231323233231313231323323132322331323223313123231322   <<    D1212121221323132313232332313132313233231323223313232233131232313223   >>      D1212121221323132313232332313132313233231323223313232233131232313222   >>