Are we suppose to floss before or after brushing our teeth? What do you do?

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Ok I tried flossing before brushing and after indulging in a nice big green leafy salad, I decided to stick to my old routine.. swish with mouth wash, spit. Then brush, lastly I floss. I find brushing before flossing helped swish away most of the food particles so it makes flossing easier…. Change my mind
Are we suppose to floss before or after brushing our teeth? What do you do?
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