Mme - beansprouts are pretty low carb - 2.5g carb per 100g - so you will be fine!
I, too, am surprised about the cabbage - this is the carb count from the Carblife website:
Cabbage, boiled
2.5
Cabbage, white, raw
5
Where did you get your carb count from, TinTin?
We had a cricket club dinner last night, which from a food point of view I was dreading - the food (whilst lovely and home-made) is usually all served plated up, with no choice, and pretty difficult to avoid carbs. But as we had a special guest last night (Sir Garfield Sobers, no less), they had really gone to town with the food, and it was served as a buffet - and there was cheese as well as dessert, so I was able to eat really well and keep it low carb, thankfully.