English verb conjugation COULD ENDEAVOUR

Regular verb: endeavour - endeavoured - endeavoured

Affirmation

Simple form

I could endeavour
you could endeavour
she could endeavour
we could endeavour
you could endeavour
they could endeavour

V-ing form

I could be endeavouring
you could be endeavouring
she could be endeavouring
we could be endeavouring
you could be endeavouring
they could be endeavouring

Perfect

I could have endeavoured
you could have endeavoured
she could have endeavoured
we could have endeavoured
you could have endeavoured
they could have endeavoured

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I endeavour?
could you endeavour?
could she endeavour?
could we endeavour?
could you endeavour?
could they endeavour?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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