English verb conjugation
COULD SHUFFLE

Regular verb: shuffle - shuffled - shuffled

Affirmation

Simple form	V-ing form
I could shuffle you could shuffle he could shuffle we could shuffle you could shuffle they could shuffle	I could be shuffling you could be shuffling he could be shuffling we could be shuffling you could be shuffling they could be shuffling
Perfect	V-ing perfect
I could have shuffled you could have shuffled he could have shuffled we could have shuffled you could have shuffled they could have shuffled	I could have been shuffling you could have been shuffling he could have been shuffling we could have been shuffling you could have been shuffling they could have been shuffling

Negation

Simple form	V-ing form
I couldn't shuffle you couldn't shuffle he couldn't shuffle we couldn't shuffle you couldn't shuffle they couldn't shuffle	I couldn't be shuffling you couldn't be shuffling he couldn't be shuffling we couldn't be shuffling you couldn't be shuffling they couldn't be shuffling
Perfect	V-ing perfect
I couldn't have shuffled you couldn't have shuffled he couldn't have shuffled we couldn't have shuffled you couldn't have shuffled they couldn't have shuffled	I couldn't have been shuffling you couldn't have been shuffling he couldn't have been shuffling we couldn't have been shuffling you couldn't have been shuffling they couldn't have been shuffling

Interrogative form

Simple form	V-ing form
could I shuffle? could you shuffle? could he shuffle? could we shuffle? could you shuffle? could they shuffle?	could I be shuffling? could you be shuffling? could he be shuffling? could we be shuffling? could you be shuffling? could they be shuffling?
Perfect	V-ing perfect
could I have shuffled? could you have shuffled? could he have shuffled? could we have shuffled? could you have shuffled? could they have shuffled?	could I have been shuffling? could you have been shuffling? could he have been shuffling? could we have been shuffling? could you have been shuffling? could they have been shuffling?

Interro-negative form

Simple form	V-ing form
couldn't I shuffle? couldn't you shuffle? couldn't he shuffle? couldn't we shuffle? couldn't you shuffle? couldn't they shuffle?	couldn't I be shuffling? couldn't you be shuffling? couldn't he be shuffling? couldn't we be shuffling? couldn't you be shuffling? couldn't they be shuffling?
Perfect	V-ing perfect
couldn't I have shuffled? couldn't you have shuffled? couldn't he have shuffled? couldn't we have shuffled? couldn't you have shuffled? couldn't they have shuffled?	couldn't I have been shuffling? couldn't you have been shuffling? couldn't he have been shuffling? couldn't we have been shuffling? couldn't you have been shuffling? couldn't they have been shuffling?