I could wallow you could wallow she could wallow we could wallow you could wallow they could wallow
V-ing form
I could be wallowing you could be wallowing she could be wallowing we could be wallowing you could be wallowing they could be wallowing
Perfect
I could have wallowed you could have wallowed she could have wallowed we could have wallowed you could have wallowed they could have wallowed
V-ing perfect
I could have been wallowing you could have been wallowing she could have been wallowing we could have been wallowing you could have been wallowing they could have been wallowing
Negation
Simple form
I could not wallow you could not wallow she could not wallow we could not wallow you could not wallow they could not wallow
V-ing form
I could not be wallowing you could not be wallowing she could not be wallowing we could not be wallowing you could not be wallowing they could not be wallowing
Perfect
I could not have wallowed you could not have wallowed she could not have wallowed we could not have wallowed you could not have wallowed they could not have wallowed
V-ing perfect
I could not have been wallowing you could not have been wallowing she could not have been wallowing we could not have been wallowing you could not have been wallowing they could not have been wallowing
Interrogative form
Simple form
could I wallow? could you wallow? could she wallow? could we wallow? could you wallow? could they wallow?
V-ing form
could I be wallowing? could you be wallowing? could she be wallowing? could we be wallowing? could you be wallowing? could they be wallowing?
Perfect
could I have wallowed? could you have wallowed? could she have wallowed? could we have wallowed? could you have wallowed? could they have wallowed?
V-ing perfect
could I have been wallowing? could you have been wallowing? could she have been wallowing? could we have been wallowing? could you have been wallowing? could they have been wallowing?
Interro-negative form
Simple form
could I not wallow? could you not wallow? could she not wallow? could we not wallow? could you not wallow? could they not wallow?
V-ing form
could I not be wallowing? could you not be wallowing? could she not be wallowing? could we not be wallowing? could you not be wallowing? could they not be wallowing?
Perfect
could I not have wallowed? could you not have wallowed? could she not have wallowed? could we not have wallowed? could you not have wallowed? could they not have wallowed?
V-ing perfect
could I not have been wallowing? could you not have been wallowing? could she not have been wallowing? could we not have been wallowing? could you not have been wallowing? could they not have been wallowing?