English verb conjugation
CAN RECUR

Regular verb: recur - recurred - recurred

Affirmation

Simple form	V-ing form
I can recur you can recur he can recur we can recur you can recur they can recur	I can be recurring you can be recurring he can be recurring we can be recurring you can be recurring they can be recurring
Perfect	V-ing perfect
I can have recurred you can have recurred he can have recurred we can have recurred you can have recurred they can have recurred	I can have been recurring you can have been recurring he can have been recurring we can have been recurring you can have been recurring they can have been recurring

Negation

Simple form	V-ing form
I can't recur you can't recur he can't recur we can't recur you can't recur they can't recur	I can't be recurring you can't be recurring he can't be recurring we can't be recurring you can't be recurring they can't be recurring
Perfect	V-ing perfect
I can't have recurred you can't have recurred he can't have recurred we can't have recurred you can't have recurred they can't have recurred	I can't have been recurring you can't have been recurring he can't have been recurring we can't have been recurring you can't have been recurring they can't have been recurring

Interrogative form

Simple form	V-ing form
can I recur? can you recur? can he recur? can we recur? can you recur? can they recur?	can I be recurring? can you be recurring? can he be recurring? can we be recurring? can you be recurring? can they be recurring?
Perfect	V-ing perfect
can I have recurred? can you have recurred? can he have recurred? can we have recurred? can you have recurred? can they have recurred?	can I have been recurring? can you have been recurring? can he have been recurring? can we have been recurring? can you have been recurring? can they have been recurring?

Interro-negative form

Simple form	V-ing form
can't I recur? can't you recur? can't he recur? can't we recur? can't you recur? can't they recur?	can't I be recurring? can't you be recurring? can't he be recurring? can't we be recurring? can't you be recurring? can't they be recurring?
Perfect	V-ing perfect
can't I have recurred? can't you have recurred? can't he have recurred? can't we have recurred? can't you have recurred? can't they have recurred?	can't I have been recurring? can't you have been recurring? can't he have been recurring? can't we have been recurring? can't you have been recurring? can't they have been recurring?