English verb conjugation COULD GAS

Regular verb: gas - gassed - gassed

Affirmation

Simple form

I could gas
you could gas
he could gas
we could gas
you could gas
they could gas

V-ing form

I could be gassing
you could be gassing
he could be gassing
we could be gassing
you could be gassing
they could be gassing

Perfect

I could have gassed
you could have gassed
he could have gassed
we could have gassed
you could have gassed
they could have gassed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I gas?
could you gas?
could he gas?
could we gas?
could you gas?
could they gas?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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