could pipette
Regular verb: pipette - pipetted- pipetted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could pipette
you could pipette
he could pipette
we could pipette
you could pipette
they could pipette 	I could be pipetting
you could be pipetting
he could be pipetting
we could be pipetting
you could be pipetting
they could be pipetting	I could have pipetted
you could have pipetted
he could have pipetted
we could have pipetted
you could have pipetted
they could have pipetted	I could have been pipetting
you could have been pipetting
he could have been pipetting
we could have been pipetting
you could have been pipetting
they could have been pipetting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not pipette
you could not pipette
he could not pipette
we could not pipette
you could not pipette
they could not pipette 	I could not be pipetting
you could not be pipetting
he could not be pipetting
we could not be pipetting
you could not be pipetting
they could not be pipetting	I could not have pipetted
you could not have pipetted
he could not have pipetted
we could not have pipetted
you could not have pipetted
they could not have pipetted	I could not have been pipetting
you could not have been pipetting
he could not have been pipetting
we could not have been pipetting
you could not have been pipetting
they could not have been pipetting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I pipette?
could you pipette?
could he pipette?
could we pipette?
could you pipette?
could they pipette? 	could I be pipetting?
could you be pipetting?
could he be pipetting?
could we be pipetting?
could you be pipetting?
could they be pipetting? 	could I have pipetted?
could you have pipetted?
could he have pipetted?
could we have pipetted?
could you have pipetted?
could they have pipetted? 	could I have been pipetting?
could you have been pipetting?
could he have been pipetting?
could we have been pipetting?
could you have been pipetting?
could they have been pipetting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not pipette?
could you not pipette?
could he not pipette?
could we not pipette?
could you not pipette?
could they not pipette? 	could I not be pipetting?
could you not be pipetting?
could he not be pipetting?
could we not be pipetting?
could you not be pipetting?
could they not be pipetting? 	could I not have pipetted?
could you not have pipetted?
could he not have pipetted?
could we not have pipetted?
could you not have pipetted?
could they not have pipetted? 	could I not have been pipetting?
could you not have been pipetting?
could he not have been pipetting?
could we not have been pipetting?
could you not have been pipetting?
could they not have been pipetting?