English verb conjugation
COULD SIZZLE

Regular verb: sizzle - sizzled - sizzled

Affirmation

Simple form	V-ing form
I could sizzle you could sizzle she could sizzle we could sizzle you could sizzle they could sizzle	I could be sizzling you could be sizzling she could be sizzling we could be sizzling you could be sizzling they could be sizzling
Perfect	V-ing perfect
I could have sizzled you could have sizzled she could have sizzled we could have sizzled you could have sizzled they could have sizzled	I could have been sizzling you could have been sizzling she could have been sizzling we could have been sizzling you could have been sizzling they could have been sizzling

Negation

Simple form	V-ing form
I couldn't sizzle you couldn't sizzle she couldn't sizzle we couldn't sizzle you couldn't sizzle they couldn't sizzle	I couldn't be sizzling you couldn't be sizzling she couldn't be sizzling we couldn't be sizzling you couldn't be sizzling they couldn't be sizzling
Perfect	V-ing perfect
I couldn't have sizzled you couldn't have sizzled she couldn't have sizzled we couldn't have sizzled you couldn't have sizzled they couldn't have sizzled	I couldn't have been sizzling you couldn't have been sizzling she couldn't have been sizzling we couldn't have been sizzling you couldn't have been sizzling they couldn't have been sizzling

Interrogative form

Simple form	V-ing form
could I sizzle? could you sizzle? could she sizzle? could we sizzle? could you sizzle? could they sizzle?	could I be sizzling? could you be sizzling? could she be sizzling? could we be sizzling? could you be sizzling? could they be sizzling?
Perfect	V-ing perfect
could I have sizzled? could you have sizzled? could she have sizzled? could we have sizzled? could you have sizzled? could they have sizzled?	could I have been sizzling? could you have been sizzling? could she have been sizzling? could we have been sizzling? could you have been sizzling? could they have been sizzling?

Interro-negative form

Simple form	V-ing form
couldn't I sizzle? couldn't you sizzle? couldn't she sizzle? couldn't we sizzle? couldn't you sizzle? couldn't they sizzle?	couldn't I be sizzling? couldn't you be sizzling? couldn't she be sizzling? couldn't we be sizzling? couldn't you be sizzling? couldn't they be sizzling?
Perfect	V-ing perfect
couldn't I have sizzled? couldn't you have sizzled? couldn't she have sizzled? couldn't we have sizzled? couldn't you have sizzled? couldn't they have sizzled?	couldn't I have been sizzling? couldn't you have been sizzling? couldn't she have been sizzling? couldn't we have been sizzling? couldn't you have been sizzling? couldn't they have been sizzling?