English verb conjugation
CAN LOOK

Regular verb: look - looked - looked

Affirmation

Simple form	V-ing form
I can look you can look he can look we can look you can look they can look	I can be looking you can be looking he can be looking we can be looking you can be looking they can be looking
Perfect	V-ing perfect
I can have looked you can have looked he can have looked we can have looked you can have looked they can have looked	I can have been looking you can have been looking he can have been looking we can have been looking you can have been looking they can have been looking

Negation

Simple form	V-ing form
I can't look you can't look he can't look we can't look you can't look they can't look	I can't be looking you can't be looking he can't be looking we can't be looking you can't be looking they can't be looking
Perfect	V-ing perfect
I can't have looked you can't have looked he can't have looked we can't have looked you can't have looked they can't have looked	I can't have been looking you can't have been looking he can't have been looking we can't have been looking you can't have been looking they can't have been looking

Interrogative form

Simple form	V-ing form
can I look? can you look? can he look? can we look? can you look? can they look?	can I be looking? can you be looking? can he be looking? can we be looking? can you be looking? can they be looking?
Perfect	V-ing perfect
can I have looked? can you have looked? can he have looked? can we have looked? can you have looked? can they have looked?	can I have been looking? can you have been looking? can he have been looking? can we have been looking? can you have been looking? can they have been looking?

Interro-negative form

Simple form	V-ing form
can't I look? can't you look? can't he look? can't we look? can't you look? can't they look?	can't I be looking? can't you be looking? can't he be looking? can't we be looking? can't you be looking? can't they be looking?
Perfect	V-ing perfect
can't I have looked? can't you have looked? can't he have looked? can't we have looked? can't you have looked? can't they have looked?	can't I have been looking? can't you have been looking? can't he have been looking? can't we have been looking? can't you have been looking? can't they have been looking?