English verb conjugation CAN SIRE

Regular verb: sire - sired - sired

Affirmation

Simple form

I can sire
you can sire
he can sire
we can sire
you can sire
they can sire

V-ing form

I can be siring
you can be siring
he can be siring
we can be siring
you can be siring
they can be siring

Perfect

I can have sired
you can have sired
he can have sired
we can have sired
you can have sired
they can have sired

V-ing perfect

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

Negation

Simple form

I cannot sire
you cannot sire
he cannot sire
we cannot sire
you cannot sire
they cannot sire

V-ing form

I cannot be siring
you cannot be siring
he cannot be siring
we cannot be siring
you cannot be siring
they cannot be siring

Perfect

I cannot have sired
you cannot have sired
he cannot have sired
we cannot have sired
you cannot have sired
they cannot have sired

V-ing perfect

I cannot have been siring
you cannot have been siring
he cannot have been siring
we cannot have been siring
you cannot have been siring
they cannot have been siring

Interrogative form

Simple form

can I sire?
can you sire?
can he sire?
can we sire?
can you sire?
can they sire?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

can I not sire?
can you not sire?
can he not sire?
can we not sire?
can you not sire?
can they not sire?

V-ing form

can I not be siring?
can you not be siring?
can he not be siring?
can we not be siring?
can you not be siring?
can they not be siring?

Perfect

can I not have sired?
can you not have sired?
can he not have sired?
can we not have sired?
can you not have sired?
can they not have sired?

V-ing perfect

can I not have been siring?
can you not have been siring?
can he not have been siring?
can we not have been siring?
can you not have been siring?
can they not have been siring?

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