English verb conjugation COULD YAW

Regular verb: yaw - yawed - yawed

Affirmation

Simple form

I could yaw
you could yaw
he could yaw
we could yaw
you could yaw
they could yaw

V-ing form

I could be yawing
you could be yawing
he could be yawing
we could be yawing
you could be yawing
they could be yawing

Perfect

I could have yawed
you could have yawed
he could have yawed
we could have yawed
you could have yawed
they could have yawed

V-ing perfect

I could have been yawing
you could have been yawing
he could have been yawing
we could have been yawing
you could have been yawing
they could have been yawing

Negation

Simple form

I couldn't yaw
you couldn't yaw
he couldn't yaw
we couldn't yaw
you couldn't yaw
they couldn't yaw

V-ing form

I couldn't be yawing
you couldn't be yawing
he couldn't be yawing
we couldn't be yawing
you couldn't be yawing
they couldn't be yawing

Perfect

I couldn't have yawed
you couldn't have yawed
he couldn't have yawed
we couldn't have yawed
you couldn't have yawed
they couldn't have yawed

V-ing perfect

I couldn't have been yawing
you couldn't have been yawing
he couldn't have been yawing
we couldn't have been yawing
you couldn't have been yawing
they couldn't have been yawing

Interrogative form

Simple form

could I yaw?
could you yaw?
could he yaw?
could we yaw?
could you yaw?
could they yaw?

V-ing form

could I be yawing?
could you be yawing?
could he be yawing?
could we be yawing?
could you be yawing?
could they be yawing?

Perfect

could I have yawed?
could you have yawed?
could he have yawed?
could we have yawed?
could you have yawed?
could they have yawed?

V-ing perfect

could I have been yawing?
could you have been yawing?
could he have been yawing?
could we have been yawing?
could you have been yawing?
could they have been yawing?

Interro-negative form

Simple form

couldn't I yaw?
couldn't you yaw?
couldn't he yaw?
couldn't we yaw?
couldn't you yaw?
couldn't they yaw?

V-ing form

couldn't I be yawing?
couldn't you be yawing?
couldn't he be yawing?
couldn't we be yawing?
couldn't you be yawing?
couldn't they be yawing?

Perfect

couldn't I have yawed?
couldn't you have yawed?
couldn't he have yawed?
couldn't we have yawed?
couldn't you have yawed?
couldn't they have yawed?

V-ing perfect

couldn't I have been yawing?
couldn't you have been yawing?
couldn't he have been yawing?
couldn't we have been yawing?
couldn't you have been yawing?
couldn't they have been yawing?

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