I could scallop you could scallop she could scallop we could scallop you could scallop they could scallop
V-ing form
I could be scalloping you could be scalloping she could be scalloping we could be scalloping you could be scalloping they could be scalloping
Perfect
I could have scalloped you could have scalloped she 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 she 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 she 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 she 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 she 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 she 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 she scallop? could we scallop? could you scallop? could they scallop?
V-ing form
could I be scalloping? could you be scalloping? could she be scalloping? could we be scalloping? could you be scalloping? could they be scalloping?
Perfect
could I have scalloped? could you have scalloped? could she 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 she 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 she 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 she 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 she 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 she have been scalloping? couldn't we have been scalloping? couldn't you have been scalloping? couldn't they have been scalloping?