English verb conjugation
CAN DESPAIR

Regular verb: despair - despaired - despaired

Affirmation

Simple form	V-ing form
I can despair you can despair he can despair we can despair you can despair they can despair	I can be despairing you can be despairing he can be despairing we can be despairing you can be despairing they can be despairing
Perfect	V-ing perfect
I can have despaired you can have despaired he can have despaired we can have despaired you can have despaired they can have despaired	I can have been despairing you can have been despairing he can have been despairing we can have been despairing you can have been despairing they can have been despairing

Negation

Simple form	V-ing form
I can't despair you can't despair he can't despair we can't despair you can't despair they can't despair	I can't be despairing you can't be despairing he can't be despairing we can't be despairing you can't be despairing they can't be despairing
Perfect	V-ing perfect
I can't have despaired you can't have despaired he can't have despaired we can't have despaired you can't have despaired they can't have despaired	I can't have been despairing you can't have been despairing he can't have been despairing we can't have been despairing you can't have been despairing they can't have been despairing

Interrogative form

Simple form	V-ing form
can I despair? can you despair? can he despair? can we despair? can you despair? can they despair?	can I be despairing? can you be despairing? can he be despairing? can we be despairing? can you be despairing? can they be despairing?
Perfect	V-ing perfect
can I have despaired? can you have despaired? can he have despaired? can we have despaired? can you have despaired? can they have despaired?	can I have been despairing? can you have been despairing? can he have been despairing? can we have been despairing? can you have been despairing? can they have been despairing?

Interro-negative form

Simple form	V-ing form
can't I despair? can't you despair? can't he despair? can't we despair? can't you despair? can't they despair?	can't I be despairing? can't you be despairing? can't he be despairing? can't we be despairing? can't you be despairing? can't they be despairing?
Perfect	V-ing perfect
can't I have despaired? can't you have despaired? can't he have despaired? can't we have despaired? can't you have despaired? can't they have despaired?	can't I have been despairing? can't you have been despairing? can't he have been despairing? can't we have been despairing? can't you have been despairing? can't they have been despairing?