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 can't scowl you can't scowl he can't scowl we can't scowl you can't scowl they can't scowl	I can't be scowling you can't be scowling he can't be scowling we can't be scowling you can't be scowling they can't be scowling
Perfect	V-ing perfect
I can't have scowled you can't have scowled he can't have scowled we can't have scowled you can't have scowled they can't have scowled	I can't have been scowling you can't have been scowling he can't have been scowling we can't have been scowling you can't have been scowling they can't 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't I scowl? can't you scowl? can't he scowl? can't we scowl? can't you scowl? can't they scowl?	can't I be scowling? can't you be scowling? can't he be scowling? can't we be scowling? can't you be scowling? can't they be scowling?
Perfect	V-ing perfect
can't I have scowled? can't you have scowled? can't he have scowled? can't we have scowled? can't you have scowled? can't they have scowled?	can't I have been scowling? can't you have been scowling? can't he have been scowling? can't we have been scowling? can't you have been scowling? can't they have been scowling?