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 cannot recur you cannot recur he cannot recur we cannot recur you cannot recur they cannot recur	I cannot be recurring you cannot be recurring he cannot be recurring we cannot be recurring you cannot be recurring they cannot be recurring
Perfect	V-ing perfect
I cannot have recurred you cannot have recurred he cannot have recurred we cannot have recurred you cannot have recurred they cannot have recurred	I cannot have been recurring you cannot have been recurring he cannot have been recurring we cannot have been recurring you cannot have been recurring they cannot 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 I not recur? can you not recur? can he not recur? can we not recur? can you not recur? can they not recur?	can I not be recurring? can you not be recurring? can he not be recurring? can we not be recurring? can you not be recurring? can they not be recurring?
Perfect	V-ing perfect
can I not have recurred? can you not have recurred? can he not have recurred? can we not have recurred? can you not have recurred? can they not have recurred?	can I not have been recurring? can you not have been recurring? can he not have been recurring? can we not have been recurring? can you not have been recurring? can they not have been recurring?