English verb conjugation
COULD FLUORIDATE

Regular verb: fluoridate - fluoridated - fluoridated

Affirmation

Simple form	V-ing form
I could fluoridate you could fluoridate she could fluoridate we could fluoridate you could fluoridate they could fluoridate	I could be fluoridating you could be fluoridating she could be fluoridating we could be fluoridating you could be fluoridating they could be fluoridating
Perfect	V-ing perfect
I could have fluoridated you could have fluoridated she could have fluoridated we could have fluoridated you could have fluoridated they could have fluoridated	I could have been fluoridating you could have been fluoridating she could have been fluoridating we could have been fluoridating you could have been fluoridating they could have been fluoridating

Negation

Simple form	V-ing form
I couldn't fluoridate you couldn't fluoridate she couldn't fluoridate we couldn't fluoridate you couldn't fluoridate they couldn't fluoridate	I couldn't be fluoridating you couldn't be fluoridating she couldn't be fluoridating we couldn't be fluoridating you couldn't be fluoridating they couldn't be fluoridating
Perfect	V-ing perfect
I couldn't have fluoridated you couldn't have fluoridated she couldn't have fluoridated we couldn't have fluoridated you couldn't have fluoridated they couldn't have fluoridated	I couldn't have been fluoridating you couldn't have been fluoridating she couldn't have been fluoridating we couldn't have been fluoridating you couldn't have been fluoridating they couldn't have been fluoridating

Interrogative form

Simple form	V-ing form
could I fluoridate? could you fluoridate? could she fluoridate? could we fluoridate? could you fluoridate? could they fluoridate?	could I be fluoridating? could you be fluoridating? could she be fluoridating? could we be fluoridating? could you be fluoridating? could they be fluoridating?
Perfect	V-ing perfect
could I have fluoridated? could you have fluoridated? could she have fluoridated? could we have fluoridated? could you have fluoridated? could they have fluoridated?	could I have been fluoridating? could you have been fluoridating? could she have been fluoridating? could we have been fluoridating? could you have been fluoridating? could they have been fluoridating?

Interro-negative form

Simple form	V-ing form
couldn't I fluoridate? couldn't you fluoridate? couldn't she fluoridate? couldn't we fluoridate? couldn't you fluoridate? couldn't they fluoridate?	couldn't I be fluoridating? couldn't you be fluoridating? couldn't she be fluoridating? couldn't we be fluoridating? couldn't you be fluoridating? couldn't they be fluoridating?
Perfect	V-ing perfect
couldn't I have fluoridated? couldn't you have fluoridated? couldn't she have fluoridated? couldn't we have fluoridated? couldn't you have fluoridated? couldn't they have fluoridated?	couldn't I have been fluoridating? couldn't you have been fluoridating? couldn't she have been fluoridating? couldn't we have been fluoridating? couldn't you have been fluoridating? couldn't they have been fluoridating?