English verb conjugation
COULD GAMBLE

Regular verb: gamble - gambled - gambled

Affirmation

Simple form	V-ing form
I could gamble you could gamble he could gamble we could gamble you could gamble they could gamble	I could be gambling you could be gambling he could be gambling we could be gambling you could be gambling they could be gambling
Perfect	V-ing perfect
I could have gambled you could have gambled he could have gambled we could have gambled you could have gambled they could have gambled	I could have been gambling you could have been gambling he could have been gambling we could have been gambling you could have been gambling they could have been gambling

Negation

Simple form	V-ing form
I couldn't gamble you couldn't gamble he couldn't gamble we couldn't gamble you couldn't gamble they couldn't gamble	I couldn't be gambling you couldn't be gambling he couldn't be gambling we couldn't be gambling you couldn't be gambling they couldn't be gambling
Perfect	V-ing perfect
I couldn't have gambled you couldn't have gambled he couldn't have gambled we couldn't have gambled you couldn't have gambled they couldn't have gambled	I couldn't have been gambling you couldn't have been gambling he couldn't have been gambling we couldn't have been gambling you couldn't have been gambling they couldn't have been gambling

Interrogative form

Simple form	V-ing form
could I gamble? could you gamble? could he gamble? could we gamble? could you gamble? could they gamble?	could I be gambling? could you be gambling? could he be gambling? could we be gambling? could you be gambling? could they be gambling?
Perfect	V-ing perfect
could I have gambled? could you have gambled? could he have gambled? could we have gambled? could you have gambled? could they have gambled?	could I have been gambling? could you have been gambling? could he have been gambling? could we have been gambling? could you have been gambling? could they have been gambling?

Interro-negative form

Simple form	V-ing form
couldn't I gamble? couldn't you gamble? couldn't he gamble? couldn't we gamble? couldn't you gamble? couldn't they gamble?	couldn't I be gambling? couldn't you be gambling? couldn't he be gambling? couldn't we be gambling? couldn't you be gambling? couldn't they be gambling?
Perfect	V-ing perfect
couldn't I have gambled? couldn't you have gambled? couldn't he have gambled? couldn't we have gambled? couldn't you have gambled? couldn't they have gambled?	couldn't I have been gambling? couldn't you have been gambling? couldn't he have been gambling? couldn't we have been gambling? couldn't you have been gambling? couldn't they have been gambling?