D12121212213231323132323323131323132332313232233132321123232311   >>    D1212121221323132313232332313132313233231323223313232112323231   <<    D12121212213231323132323323131323132332313232233132321123232313   >>      D12121212213231323132323323131323132332313232233132321123232312   >>