English verb conjugation COULD TINKER

Regular verb: tinker - tinkered - tinkered

Affirmation

Simple form

I could tinker
you could tinker
she could tinker
we could tinker
you could tinker
they could tinker

V-ing form

I could be tinkering
you could be tinkering
she could be tinkering
we could be tinkering
you could be tinkering
they could be tinkering

Perfect

I could have tinkered
you could have tinkered
she could have tinkered
we could have tinkered
you could have tinkered
they could have tinkered

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I tinker?
could you tinker?
could she tinker?
could we tinker?
could you tinker?
could they tinker?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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