I could dollop you could dollop he could dollop we could dollop you could dollop they could dollop
V-ing form
I could be dolloping you could be dolloping he could be dolloping we could be dolloping you could be dolloping they could be dolloping
Perfect
I could have dolloped you could have dolloped he could have dolloped we could have dolloped you could have dolloped they could have dolloped
V-ing perfect
I could have been dolloping you could have been dolloping he could have been dolloping we could have been dolloping you could have been dolloping they could have been dolloping
Negation
Simple form
I couldn't dollop you couldn't dollop he couldn't dollop we couldn't dollop you couldn't dollop they couldn't dollop
V-ing form
I couldn't be dolloping you couldn't be dolloping he couldn't be dolloping we couldn't be dolloping you couldn't be dolloping they couldn't be dolloping
Perfect
I couldn't have dolloped you couldn't have dolloped he couldn't have dolloped we couldn't have dolloped you couldn't have dolloped they couldn't have dolloped
V-ing perfect
I couldn't have been dolloping you couldn't have been dolloping he couldn't have been dolloping we couldn't have been dolloping you couldn't have been dolloping they couldn't have been dolloping
Interrogative form
Simple form
could I dollop? could you dollop? could he dollop? could we dollop? could you dollop? could they dollop?
V-ing form
could I be dolloping? could you be dolloping? could he be dolloping? could we be dolloping? could you be dolloping? could they be dolloping?
Perfect
could I have dolloped? could you have dolloped? could he have dolloped? could we have dolloped? could you have dolloped? could they have dolloped?
V-ing perfect
could I have been dolloping? could you have been dolloping? could he have been dolloping? could we have been dolloping? could you have been dolloping? could they have been dolloping?
Interro-negative form
Simple form
couldn't I dollop? couldn't you dollop? couldn't he dollop? couldn't we dollop? couldn't you dollop? couldn't they dollop?
V-ing form
couldn't I be dolloping? couldn't you be dolloping? couldn't he be dolloping? couldn't we be dolloping? couldn't you be dolloping? couldn't they be dolloping?
Perfect
couldn't I have dolloped? couldn't you have dolloped? couldn't he have dolloped? couldn't we have dolloped? couldn't you have dolloped? couldn't they have dolloped?
V-ing perfect
couldn't I have been dolloping? couldn't you have been dolloping? couldn't he have been dolloping? couldn't we have been dolloping? couldn't you have been dolloping? couldn't they have been dolloping?