English verb conjugation COULD WATERPROOF

Regular verb: waterproof - waterproofed - waterproofed

Affirmation

Simple form

I could waterproof
you could waterproof
he could waterproof
we could waterproof
you could waterproof
they could waterproof

V-ing form

I could be waterproofing
you could be waterproofing
he could be waterproofing
we could be waterproofing
you could be waterproofing
they could be waterproofing

Perfect

I could have waterproofed
you could have waterproofed
he could have waterproofed
we could have waterproofed
you could have waterproofed
they could have waterproofed

V-ing perfect

I could have been waterproofing
you could have been waterproofing
he could have been waterproofing
we could have been waterproofing
you could have been waterproofing
they could have been waterproofing

Negation

Simple form

I couldn't waterproof
you couldn't waterproof
he couldn't waterproof
we couldn't waterproof
you couldn't waterproof
they couldn't waterproof

V-ing form

I couldn't be waterproofing
you couldn't be waterproofing
he couldn't be waterproofing
we couldn't be waterproofing
you couldn't be waterproofing
they couldn't be waterproofing

Perfect

I couldn't have waterproofed
you couldn't have waterproofed
he couldn't have waterproofed
we couldn't have waterproofed
you couldn't have waterproofed
they couldn't have waterproofed

V-ing perfect

I couldn't have been waterproofing
you couldn't have been waterproofing
he couldn't have been waterproofing
we couldn't have been waterproofing
you couldn't have been waterproofing
they couldn't have been waterproofing

Interrogative form

Simple form

could I waterproof?
could you waterproof?
could he waterproof?
could we waterproof?
could you waterproof?
could they waterproof?

V-ing form

could I be waterproofing?
could you be waterproofing?
could he be waterproofing?
could we be waterproofing?
could you be waterproofing?
could they be waterproofing?

Perfect

could I have waterproofed?
could you have waterproofed?
could he have waterproofed?
could we have waterproofed?
could you have waterproofed?
could they have waterproofed?

V-ing perfect

could I have been waterproofing?
could you have been waterproofing?
could he have been waterproofing?
could we have been waterproofing?
could you have been waterproofing?
could they have been waterproofing?

Interro-negative form

Simple form

couldn't I waterproof?
couldn't you waterproof?
couldn't he waterproof?
couldn't we waterproof?
couldn't you waterproof?
couldn't they waterproof?

V-ing form

couldn't I be waterproofing?
couldn't you be waterproofing?
couldn't he be waterproofing?
couldn't we be waterproofing?
couldn't you be waterproofing?
couldn't they be waterproofing?

Perfect

couldn't I have waterproofed?
couldn't you have waterproofed?
couldn't he have waterproofed?
couldn't we have waterproofed?
couldn't you have waterproofed?
couldn't they have waterproofed?

V-ing perfect

couldn't I have been waterproofing?
couldn't you have been waterproofing?
couldn't he have been waterproofing?
couldn't we have been waterproofing?
couldn't you have been waterproofing?
couldn't they have been waterproofing?

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