Combinations / hand strength for Omaha

[fizbin]

How do combinations work for Omaha? Does it work like it should for Omaha? For example, if quads are on board, is it impossible for cash_hand_player_combinations.flg_r_fouroak to be true in Omaha? Another example: is it impossible to have two pair with hand strength 0 (two pair on board) in Omaha?

[WhiteRider]

cash_hand_player_combinations stores the player's actual hand, so for example if there are quads on board then cash_hand_player_combinations.flg_r_fouroak can't be true because you can't have 4 of a kind.