English verb conjugation
CAN DETERIORATE

Regular verb: deteriorate - deteriorated - deteriorated

Affirmation

Simple form	V-ing form
I can deteriorate you can deteriorate he can deteriorate we can deteriorate you can deteriorate they can deteriorate	I can be deteriorating you can be deteriorating he can be deteriorating we can be deteriorating you can be deteriorating they can be deteriorating
Perfect	V-ing perfect
I can have deteriorated you can have deteriorated he can have deteriorated we can have deteriorated you can have deteriorated they can have deteriorated	I can have been deteriorating you can have been deteriorating he can have been deteriorating we can have been deteriorating you can have been deteriorating they can have been deteriorating

Negation

Simple form	V-ing form
I can't deteriorate you can't deteriorate he can't deteriorate we can't deteriorate you can't deteriorate they can't deteriorate	I can't be deteriorating you can't be deteriorating he can't be deteriorating we can't be deteriorating you can't be deteriorating they can't be deteriorating
Perfect	V-ing perfect
I can't have deteriorated you can't have deteriorated he can't have deteriorated we can't have deteriorated you can't have deteriorated they can't have deteriorated	I can't have been deteriorating you can't have been deteriorating he can't have been deteriorating we can't have been deteriorating you can't have been deteriorating they can't have been deteriorating

Interrogative form

Simple form	V-ing form
can I deteriorate? can you deteriorate? can he deteriorate? can we deteriorate? can you deteriorate? can they deteriorate?	can I be deteriorating? can you be deteriorating? can he be deteriorating? can we be deteriorating? can you be deteriorating? can they be deteriorating?
Perfect	V-ing perfect
can I have deteriorated? can you have deteriorated? can he have deteriorated? can we have deteriorated? can you have deteriorated? can they have deteriorated?	can I have been deteriorating? can you have been deteriorating? can he have been deteriorating? can we have been deteriorating? can you have been deteriorating? can they have been deteriorating?

Interro-negative form

Simple form	V-ing form
can't I deteriorate? can't you deteriorate? can't he deteriorate? can't we deteriorate? can't you deteriorate? can't they deteriorate?	can't I be deteriorating? can't you be deteriorating? can't he be deteriorating? can't we be deteriorating? can't you be deteriorating? can't they be deteriorating?
Perfect	V-ing perfect
can't I have deteriorated? can't you have deteriorated? can't he have deteriorated? can't we have deteriorated? can't you have deteriorated? can't they have deteriorated?	can't I have been deteriorating? can't you have been deteriorating? can't he have been deteriorating? can't we have been deteriorating? can't you have been deteriorating? can't they have been deteriorating?