English verb conjugation CAN UNDERTAIN

Regular verb: undertain - undertained - undertained

Affirmation

Simple form

I can undertain
you can undertain
he can undertain
we can undertain
you can undertain
they can undertain

V-ing form

I can be undertaining
you can be undertaining
he can be undertaining
we can be undertaining
you can be undertaining
they can be undertaining

Perfect

I can have undertained
you can have undertained
he can have undertained
we can have undertained
you can have undertained
they can have undertained

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

can I undertain?
can you undertain?
can he undertain?
can we undertain?
can you undertain?
can they undertain?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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