English verb conjugation
CAN QUAKE

Regular verb: quake - quaked - quaked

Affirmation

Simple form	V-ing form
I can quake you can quake he can quake we can quake you can quake they can quake	I can be quaking you can be quaking he can be quaking we can be quaking you can be quaking they can be quaking
Perfect	V-ing perfect
I can have quaked you can have quaked he can have quaked we can have quaked you can have quaked they can have quaked	I can have been quaking you can have been quaking he can have been quaking we can have been quaking you can have been quaking they can have been quaking

Negation

Simple form	V-ing form
I can't quake you can't quake he can't quake we can't quake you can't quake they can't quake	I can't be quaking you can't be quaking he can't be quaking we can't be quaking you can't be quaking they can't be quaking
Perfect	V-ing perfect
I can't have quaked you can't have quaked he can't have quaked we can't have quaked you can't have quaked they can't have quaked	I can't have been quaking you can't have been quaking he can't have been quaking we can't have been quaking you can't have been quaking they can't have been quaking

Interrogative form

Simple form	V-ing form
can I quake? can you quake? can he quake? can we quake? can you quake? can they quake?	can I be quaking? can you be quaking? can he be quaking? can we be quaking? can you be quaking? can they be quaking?
Perfect	V-ing perfect
can I have quaked? can you have quaked? can he have quaked? can we have quaked? can you have quaked? can they have quaked?	can I have been quaking? can you have been quaking? can he have been quaking? can we have been quaking? can you have been quaking? can they have been quaking?

Interro-negative form

Simple form	V-ing form
can't I quake? can't you quake? can't he quake? can't we quake? can't you quake? can't they quake?	can't I be quaking? can't you be quaking? can't he be quaking? can't we be quaking? can't you be quaking? can't they be quaking?
Perfect	V-ing perfect
can't I have quaked? can't you have quaked? can't he have quaked? can't we have quaked? can't you have quaked? can't they have quaked?	can't I have been quaking? can't you have been quaking? can't he have been quaking? can't we have been quaking? can't you have been quaking? can't they have been quaking?