English verb conjugation
COULD SIZZLE

Regular verb: sizzle - sizzled - sizzled

Affirmation

Simple form	V-ing form
I could sizzle you could sizzle he could sizzle we could sizzle you could sizzle they could sizzle	I could be sizzling you could be sizzling he 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 he 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 he 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 he 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 he 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 he 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 he 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 he sizzle? could we sizzle? could you sizzle? could they sizzle?	could I be sizzling? could you be sizzling? could he 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 he 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 he 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 he 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 he 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 he 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 he have been sizzling? couldn't we have been sizzling? couldn't you have been sizzling? couldn't they have been sizzling?