* Complex 1 or 1 OR 2 of 3 [corporation]
      * Escrow: 2 of 3 (A | B | E); then 2 of 2 (AE) OR 2 of 2 (BE); then 2 of 2 (AE) OR 2 of 2 (BE) OR 2 of 2 after time-delay (AB)