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