I can oscillate you can oscillate he can oscillate we can oscillate you can oscillate they can oscillate
V-ing form
I can be oscillating you can be oscillating he can be oscillating we can be oscillating you can be oscillating they can be oscillating
Perfect
I can have oscillated you can have oscillated he can have oscillated we can have oscillated you can have oscillated they can have oscillated
V-ing perfect
I can have been oscillating you can have been oscillating he can have been oscillating we can have been oscillating you can have been oscillating they can have been oscillating
Negation
Simple form
I can't oscillate you can't oscillate he can't oscillate we can't oscillate you can't oscillate they can't oscillate
V-ing form
I can't be oscillating you can't be oscillating he can't be oscillating we can't be oscillating you can't be oscillating they can't be oscillating
Perfect
I can't have oscillated you can't have oscillated he can't have oscillated we can't have oscillated you can't have oscillated they can't have oscillated
V-ing perfect
I can't have been oscillating you can't have been oscillating he can't have been oscillating we can't have been oscillating you can't have been oscillating they can't have been oscillating
Interrogative form
Simple form
can I oscillate? can you oscillate? can he oscillate? can we oscillate? can you oscillate? can they oscillate?
V-ing form
can I be oscillating? can you be oscillating? can he be oscillating? can we be oscillating? can you be oscillating? can they be oscillating?
Perfect
can I have oscillated? can you have oscillated? can he have oscillated? can we have oscillated? can you have oscillated? can they have oscillated?
V-ing perfect
can I have been oscillating? can you have been oscillating? can he have been oscillating? can we have been oscillating? can you have been oscillating? can they have been oscillating?
Interro-negative form
Simple form
can't I oscillate? can't you oscillate? can't he oscillate? can't we oscillate? can't you oscillate? can't they oscillate?
V-ing form
can't I be oscillating? can't you be oscillating? can't he be oscillating? can't we be oscillating? can't you be oscillating? can't they be oscillating?
Perfect
can't I have oscillated? can't you have oscillated? can't he have oscillated? can't we have oscillated? can't you have oscillated? can't they have oscillated?
V-ing perfect
can't I have been oscillating? can't you have been oscillating? can't he have been oscillating? can't we have been oscillating? can't you have been oscillating? can't they have been oscillating?