could pipet
Regular verb: pipet - pipeted- pipeted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could pipet
you could pipet
she could pipet
we could pipet
you could pipet
they could pipet 	I could be pipeting
you could be pipeting
she could be pipeting
we could be pipeting
you could be pipeting
they could be pipeting	I could have pipeted
you could have pipeted
she could have pipeted
we could have pipeted
you could have pipeted
they could have pipeted	I could have been pipeting
you could have been pipeting
she could have been pipeting
we could have been pipeting
you could have been pipeting
they could have been pipeting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't pipet
you couldn't pipet
she couldn't pipet
we couldn't pipet
you couldn't pipet
they couldn't pipet 	I couldn't be pipeting
you couldn't be pipeting
she couldn't be pipeting
we couldn't be pipeting
you couldn't be pipeting
they couldn't be pipeting	I couldn't have pipeted
you couldn't have pipeted
she couldn't have pipeted
we couldn't have pipeted
you couldn't have pipeted
they couldn't have pipeted	I couldn't have been pipeting
you couldn't have been pipeting
she couldn't have been pipeting
we couldn't have been pipeting
you couldn't have been pipeting
they couldn't have been pipeting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I pipet?
could you pipet?
could she pipet?
could we pipet?
could you pipet?
could they pipet? 	could I be pipeting?
could you be pipeting?
could she be pipeting?
could we be pipeting?
could you be pipeting?
could they be pipeting? 	could I have pipeted?
could you have pipeted?
could she have pipeted?
could we have pipeted?
could you have pipeted?
could they have pipeted? 	could I have been pipeting?
could you have been pipeting?
could she have been pipeting?
could we have been pipeting?
could you have been pipeting?
could they have been pipeting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I pipet?
couldn't you pipet?
couldn't she pipet?
couldn't we pipet?
couldn't you pipet?
couldn't they pipet? 	couldn't I be pipeting?
couldn't you be pipeting?
couldn't she be pipeting?
couldn't we be pipeting?
couldn't you be pipeting?
couldn't they be pipeting? 	couldn't I have pipeted?
couldn't you have pipeted?
couldn't she have pipeted?
couldn't we have pipeted?
couldn't you have pipeted?
couldn't they have pipeted? 	couldn't I have been pipeting?
couldn't you have been pipeting?
couldn't she have been pipeting?
couldn't we have been pipeting?
couldn't you have been pipeting?
couldn't they have been pipeting?