English verb conjugation COULD TIER

Regular verb: tier - tiered - tiered

Affirmation

Simple form

I could tier
you could tier
she could tier
we could tier
you could tier
they could tier

V-ing form

I could be tiering
you could be tiering
she could be tiering
we could be tiering
you could be tiering
they could be tiering

Perfect

I could have tiered
you could have tiered
she could have tiered
we could have tiered
you could have tiered
they could have tiered

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I tier?
could you tier?
could she tier?
could we tier?
could you tier?
could they tier?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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