English verb conjugation
COULD TOLL

Regular verb: toll - tolled - tolled

Affirmation

Simple form	V-ing form
I could toll you could toll he could toll we could toll you could toll they could toll	I could be tolling you could be tolling he could be tolling we could be tolling you could be tolling they could be tolling
Perfect	V-ing perfect
I could have tolled you could have tolled he could have tolled we could have tolled you could have tolled they could have tolled	I could have been tolling you could have been tolling he could have been tolling we could have been tolling you could have been tolling they could have been tolling

Negation

Simple form	V-ing form
I couldn't toll you couldn't toll he couldn't toll we couldn't toll you couldn't toll they couldn't toll	I couldn't be tolling you couldn't be tolling he couldn't be tolling we couldn't be tolling you couldn't be tolling they couldn't be tolling
Perfect	V-ing perfect
I couldn't have tolled you couldn't have tolled he couldn't have tolled we couldn't have tolled you couldn't have tolled they couldn't have tolled	I couldn't have been tolling you couldn't have been tolling he couldn't have been tolling we couldn't have been tolling you couldn't have been tolling they couldn't have been tolling

Interrogative form

Simple form	V-ing form
could I toll? could you toll? could he toll? could we toll? could you toll? could they toll?	could I be tolling? could you be tolling? could he be tolling? could we be tolling? could you be tolling? could they be tolling?
Perfect	V-ing perfect
could I have tolled? could you have tolled? could he have tolled? could we have tolled? could you have tolled? could they have tolled?	could I have been tolling? could you have been tolling? could he have been tolling? could we have been tolling? could you have been tolling? could they have been tolling?

Interro-negative form

Simple form	V-ing form
couldn't I toll? couldn't you toll? couldn't he toll? couldn't we toll? couldn't you toll? couldn't they toll?	couldn't I be tolling? couldn't you be tolling? couldn't he be tolling? couldn't we be tolling? couldn't you be tolling? couldn't they be tolling?
Perfect	V-ing perfect
couldn't I have tolled? couldn't you have tolled? couldn't he have tolled? couldn't we have tolled? couldn't you have tolled? couldn't they have tolled?	couldn't I have been tolling? couldn't you have been tolling? couldn't he have been tolling? couldn't we have been tolling? couldn't you have been tolling? couldn't they have been tolling?