English verb conjugation
COULD NICTITATE

Regular verb: nictitate - nictitated - nictitated

Affirmation

Simple form	V-ing form
I could nictitate you could nictitate he could nictitate we could nictitate you could nictitate they could nictitate	I could be nictitating you could be nictitating he could be nictitating we could be nictitating you could be nictitating they could be nictitating
Perfect	V-ing perfect
I could have nictitated you could have nictitated he could have nictitated we could have nictitated you could have nictitated they could have nictitated	I could have been nictitating you could have been nictitating he could have been nictitating we could have been nictitating you could have been nictitating they could have been nictitating

Negation

Simple form	V-ing form
I could not nictitate you could not nictitate he could not nictitate we could not nictitate you could not nictitate they could not nictitate	I could not be nictitating you could not be nictitating he could not be nictitating we could not be nictitating you could not be nictitating they could not be nictitating
Perfect	V-ing perfect
I could not have nictitated you could not have nictitated he could not have nictitated we could not have nictitated you could not have nictitated they could not have nictitated	I could not have been nictitating you could not have been nictitating he could not have been nictitating we could not have been nictitating you could not have been nictitating they could not have been nictitating

Interrogative form

Simple form	V-ing form
could I nictitate? could you nictitate? could he nictitate? could we nictitate? could you nictitate? could they nictitate?	could I be nictitating? could you be nictitating? could he be nictitating? could we be nictitating? could you be nictitating? could they be nictitating?
Perfect	V-ing perfect
could I have nictitated? could you have nictitated? could he have nictitated? could we have nictitated? could you have nictitated? could they have nictitated?	could I have been nictitating? could you have been nictitating? could he have been nictitating? could we have been nictitating? could you have been nictitating? could they have been nictitating?

Interro-negative form

Simple form	V-ing form
could I not nictitate? could you not nictitate? could he not nictitate? could we not nictitate? could you not nictitate? could they not nictitate?	could I not be nictitating? could you not be nictitating? could he not be nictitating? could we not be nictitating? could you not be nictitating? could they not be nictitating?
Perfect	V-ing perfect
could I not have nictitated? could you not have nictitated? could he not have nictitated? could we not have nictitated? could you not have nictitated? could they not have nictitated?	could I not have been nictitating? could you not have been nictitating? could he not have been nictitating? could we not have been nictitating? could you not have been nictitating? could they not have been nictitating?