English verb conjugation
COULD SNEAK

Irregular verb: sneak - sneaked, snuck - snuck

Affirmation

Simple form	V-ing form
I could sneak you could sneak she could sneak we could sneak you could sneak they could sneak	I could be sneaking you could be sneaking she could be sneaking we could be sneaking you could be sneaking they could be sneaking
Perfect	V-ing perfect
I could have snuck you could have snuck she could have snuck we could have snuck you could have snuck they could have snuck	I could have been sneaking you could have been sneaking she could have been sneaking we could have been sneaking you could have been sneaking they could have been sneaking

Negation

Simple form	V-ing form
I couldn't sneak you couldn't sneak she couldn't sneak we couldn't sneak you couldn't sneak they couldn't sneak	I couldn't be sneaking you couldn't be sneaking she couldn't be sneaking we couldn't be sneaking you couldn't be sneaking they couldn't be sneaking
Perfect	V-ing perfect
I couldn't have snuck you couldn't have snuck she couldn't have snuck we couldn't have snuck you couldn't have snuck they couldn't have snuck	I couldn't have been sneaking you couldn't have been sneaking she couldn't have been sneaking we couldn't have been sneaking you couldn't have been sneaking they couldn't have been sneaking

Interrogative form

Simple form	V-ing form
could I sneak? could you sneak? could she sneak? could we sneak? could you sneak? could they sneak?	could I be sneaking? could you be sneaking? could she be sneaking? could we be sneaking? could you be sneaking? could they be sneaking?
Perfect	V-ing perfect
could I have snuck? could you have snuck? could she have snuck? could we have snuck? could you have snuck? could they have snuck?	could I have been sneaking? could you have been sneaking? could she have been sneaking? could we have been sneaking? could you have been sneaking? could they have been sneaking?

Interro-negative form

Simple form	V-ing form
couldn't I sneak? couldn't you sneak? couldn't she sneak? couldn't we sneak? couldn't you sneak? couldn't they sneak?	couldn't I be sneaking? couldn't you be sneaking? couldn't she be sneaking? couldn't we be sneaking? couldn't you be sneaking? couldn't they be sneaking?
Perfect	V-ing perfect
couldn't I have snuck? couldn't you have snuck? couldn't she have snuck? couldn't we have snuck? couldn't you have snuck? couldn't they have snuck?	couldn't I have been sneaking? couldn't you have been sneaking? couldn't she have been sneaking? couldn't we have been sneaking? couldn't you have been sneaking? couldn't they have been sneaking?