English verb conjugation
CAN SCOWL

Regular verb: scowl - scowled - scowled

Affirmation

Simple form	V-ing form
I can scowl you can scowl he can scowl we can scowl you can scowl they can scowl	I can be scowling you can be scowling he can be scowling we can be scowling you can be scowling they can be scowling
Perfect	V-ing perfect
I can have scowled you can have scowled he can have scowled we can have scowled you can have scowled they can have scowled	I can have been scowling you can have been scowling he can have been scowling we can have been scowling you can have been scowling they can have been scowling

Negation

Simple form	V-ing form
I cannot scowl you cannot scowl he cannot scowl we cannot scowl you cannot scowl they cannot scowl	I cannot be scowling you cannot be scowling he cannot be scowling we cannot be scowling you cannot be scowling they cannot be scowling
Perfect	V-ing perfect
I cannot have scowled you cannot have scowled he cannot have scowled we cannot have scowled you cannot have scowled they cannot have scowled	I cannot have been scowling you cannot have been scowling he cannot have been scowling we cannot have been scowling you cannot have been scowling they cannot have been scowling

Interrogative form

Simple form	V-ing form
can I scowl? can you scowl? can he scowl? can we scowl? can you scowl? can they scowl?	can I be scowling? can you be scowling? can he be scowling? can we be scowling? can you be scowling? can they be scowling?
Perfect	V-ing perfect
can I have scowled? can you have scowled? can he have scowled? can we have scowled? can you have scowled? can they have scowled?	can I have been scowling? can you have been scowling? can he have been scowling? can we have been scowling? can you have been scowling? can they have been scowling?

Interro-negative form

Simple form	V-ing form
can I not scowl? can you not scowl? can he not scowl? can we not scowl? can you not scowl? can they not scowl?	can I not be scowling? can you not be scowling? can he not be scowling? can we not be scowling? can you not be scowling? can they not be scowling?
Perfect	V-ing perfect
can I not have scowled? can you not have scowled? can he not have scowled? can we not have scowled? can you not have scowled? can they not have scowled?	can I not have been scowling? can you not have been scowling? can he not have been scowling? can we not have been scowling? can you not have been scowling? can they not have been scowling?