English verb conjugation COULD MAST

Regular verb: mast - masted - masted

Affirmation

Simple form

I could mast
you could mast
she could mast
we could mast
you could mast
they could mast

V-ing form

I could be masting
you could be masting
she could be masting
we could be masting
you could be masting
they could be masting

Perfect

I could have masted
you could have masted
she could have masted
we could have masted
you could have masted
they could have masted

V-ing perfect

I could have been masting
you could have been masting
she could have been masting
we could have been masting
you could have been masting
they could have been masting

Negation

Simple form

I couldn't mast
you couldn't mast
she couldn't mast
we couldn't mast
you couldn't mast
they couldn't mast

V-ing form

I couldn't be masting
you couldn't be masting
she couldn't be masting
we couldn't be masting
you couldn't be masting
they couldn't be masting

Perfect

I couldn't have masted
you couldn't have masted
she couldn't have masted
we couldn't have masted
you couldn't have masted
they couldn't have masted

V-ing perfect

I couldn't have been masting
you couldn't have been masting
she couldn't have been masting
we couldn't have been masting
you couldn't have been masting
they couldn't have been masting

Interrogative form

Simple form

could I mast?
could you mast?
could she mast?
could we mast?
could you mast?
could they mast?

V-ing form

could I be masting?
could you be masting?
could she be masting?
could we be masting?
could you be masting?
could they be masting?

Perfect

could I have masted?
could you have masted?
could she have masted?
could we have masted?
could you have masted?
could they have masted?

V-ing perfect

could I have been masting?
could you have been masting?
could she have been masting?
could we have been masting?
could you have been masting?
could they have been masting?

Interro-negative form

Simple form

couldn't I mast?
couldn't you mast?
couldn't she mast?
couldn't we mast?
couldn't you mast?
couldn't they mast?

V-ing form

couldn't I be masting?
couldn't you be masting?
couldn't she be masting?
couldn't we be masting?
couldn't you be masting?
couldn't they be masting?

Perfect

couldn't I have masted?
couldn't you have masted?
couldn't she have masted?
couldn't we have masted?
couldn't you have masted?
couldn't they have masted?

V-ing perfect

couldn't I have been masting?
couldn't you have been masting?
couldn't she have been masting?
couldn't we have been masting?
couldn't you have been masting?
couldn't they have been masting?

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