English verb conjugation CAN YAWN

Regular verb: yawn - yawned - yawned

Affirmation

Simple form

I can yawn
you can yawn
he can yawn
we can yawn
you can yawn
they can yawn

V-ing form

I can be yawning
you can be yawning
he can be yawning
we can be yawning
you can be yawning
they can be yawning

Perfect

I can have yawned
you can have yawned
he can have yawned
we can have yawned
you can have yawned
they can have yawned

V-ing perfect

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

Negation

Simple form

I cannot yawn
you cannot yawn
he cannot yawn
we cannot yawn
you cannot yawn
they cannot yawn

V-ing form

I cannot be yawning
you cannot be yawning
he cannot be yawning
we cannot be yawning
you cannot be yawning
they cannot be yawning

Perfect

I cannot have yawned
you cannot have yawned
he cannot have yawned
we cannot have yawned
you cannot have yawned
they cannot have yawned

V-ing perfect

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

Interrogative form

Simple form

can I yawn?
can you yawn?
can he yawn?
can we yawn?
can you yawn?
can they yawn?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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