English verb conjugation CAN PREASCERTAIN

Regular verb: preascertain - preascertained - preascertained

Affirmation

Simple form

I can preascertain
you can preascertain
he can preascertain
we can preascertain
you can preascertain
they can preascertain

V-ing form

I can be preascertaining
you can be preascertaining
he can be preascertaining
we can be preascertaining
you can be preascertaining
they can be preascertaining

Perfect

I can have preascertained
you can have preascertained
he can have preascertained
we can have preascertained
you can have preascertained
they can have preascertained

V-ing perfect

I can have been preascertaining
you can have been preascertaining
he can have been preascertaining
we can have been preascertaining
you can have been preascertaining
they can have been preascertaining

Negation

Simple form

I can't preascertain
you can't preascertain
he can't preascertain
we can't preascertain
you can't preascertain
they can't preascertain

V-ing form

I can't be preascertaining
you can't be preascertaining
he can't be preascertaining
we can't be preascertaining
you can't be preascertaining
they can't be preascertaining

Perfect

I can't have preascertained
you can't have preascertained
he can't have preascertained
we can't have preascertained
you can't have preascertained
they can't have preascertained

V-ing perfect

I can't have been preascertaining
you can't have been preascertaining
he can't have been preascertaining
we can't have been preascertaining
you can't have been preascertaining
they can't have been preascertaining

Interrogative form

Simple form

can I preascertain?
can you preascertain?
can he preascertain?
can we preascertain?
can you preascertain?
can they preascertain?

V-ing form

can I be preascertaining?
can you be preascertaining?
can he be preascertaining?
can we be preascertaining?
can you be preascertaining?
can they be preascertaining?

Perfect

can I have preascertained?
can you have preascertained?
can he have preascertained?
can we have preascertained?
can you have preascertained?
can they have preascertained?

V-ing perfect

can I have been preascertaining?
can you have been preascertaining?
can he have been preascertaining?
can we have been preascertaining?
can you have been preascertaining?
can they have been preascertaining?

Interro-negative form

Simple form

can't I preascertain?
can't you preascertain?
can't he preascertain?
can't we preascertain?
can't you preascertain?
can't they preascertain?

V-ing form

can't I be preascertaining?
can't you be preascertaining?
can't he be preascertaining?
can't we be preascertaining?
can't you be preascertaining?
can't they be preascertaining?

Perfect

can't I have preascertained?
can't you have preascertained?
can't he have preascertained?
can't we have preascertained?
can't you have preascertained?
can't they have preascertained?

V-ing perfect

can't I have been preascertaining?
can't you have been preascertaining?
can't he have been preascertaining?
can't we have been preascertaining?
can't you have been preascertaining?
can't they have been preascertaining?

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