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