English verb conjugation
COULD SHALLOW

Regular verb: shallow - shallowed - shallowed

Affirmation

Simple form	V-ing form
I could shallow you could shallow he could shallow we could shallow you could shallow they could shallow	I could be shallowing you could be shallowing he could be shallowing we could be shallowing you could be shallowing they could be shallowing
Perfect	V-ing perfect
I could have shallowed you could have shallowed he could have shallowed we could have shallowed you could have shallowed they could have shallowed	I could have been shallowing you could have been shallowing he could have been shallowing we could have been shallowing you could have been shallowing they could have been shallowing

Negation

Simple form	V-ing form
I couldn't shallow you couldn't shallow he couldn't shallow we couldn't shallow you couldn't shallow they couldn't shallow	I couldn't be shallowing you couldn't be shallowing he couldn't be shallowing we couldn't be shallowing you couldn't be shallowing they couldn't be shallowing
Perfect	V-ing perfect
I couldn't have shallowed you couldn't have shallowed he couldn't have shallowed we couldn't have shallowed you couldn't have shallowed they couldn't have shallowed	I couldn't have been shallowing you couldn't have been shallowing he couldn't have been shallowing we couldn't have been shallowing you couldn't have been shallowing they couldn't have been shallowing

Interrogative form

Simple form	V-ing form
could I shallow? could you shallow? could he shallow? could we shallow? could you shallow? could they shallow?	could I be shallowing? could you be shallowing? could he be shallowing? could we be shallowing? could you be shallowing? could they be shallowing?
Perfect	V-ing perfect
could I have shallowed? could you have shallowed? could he have shallowed? could we have shallowed? could you have shallowed? could they have shallowed?	could I have been shallowing? could you have been shallowing? could he have been shallowing? could we have been shallowing? could you have been shallowing? could they have been shallowing?

Interro-negative form

Simple form	V-ing form
couldn't I shallow? couldn't you shallow? couldn't he shallow? couldn't we shallow? couldn't you shallow? couldn't they shallow?	couldn't I be shallowing? couldn't you be shallowing? couldn't he be shallowing? couldn't we be shallowing? couldn't you be shallowing? couldn't they be shallowing?
Perfect	V-ing perfect
couldn't I have shallowed? couldn't you have shallowed? couldn't he have shallowed? couldn't we have shallowed? couldn't you have shallowed? couldn't they have shallowed?	couldn't I have been shallowing? couldn't you have been shallowing? couldn't he have been shallowing? couldn't we have been shallowing? couldn't you have been shallowing? couldn't they have been shallowing?