I could gloat you could gloat she could gloat we could gloat you could gloat they could gloat
V-ing form
I could be gloating you could be gloating she could be gloating we could be gloating you could be gloating they could be gloating
Perfect
I could have gloated you could have gloated she could have gloated we could have gloated you could have gloated they could have gloated
V-ing perfect
I could have been gloating you could have been gloating she could have been gloating we could have been gloating you could have been gloating they could have been gloating
Negation
Simple form
I couldn't gloat you couldn't gloat she couldn't gloat we couldn't gloat you couldn't gloat they couldn't gloat
V-ing form
I couldn't be gloating you couldn't be gloating she couldn't be gloating we couldn't be gloating you couldn't be gloating they couldn't be gloating
Perfect
I couldn't have gloated you couldn't have gloated she couldn't have gloated we couldn't have gloated you couldn't have gloated they couldn't have gloated
V-ing perfect
I couldn't have been gloating you couldn't have been gloating she couldn't have been gloating we couldn't have been gloating you couldn't have been gloating they couldn't have been gloating
Interrogative form
Simple form
could I gloat? could you gloat? could she gloat? could we gloat? could you gloat? could they gloat?
V-ing form
could I be gloating? could you be gloating? could she be gloating? could we be gloating? could you be gloating? could they be gloating?
Perfect
could I have gloated? could you have gloated? could she have gloated? could we have gloated? could you have gloated? could they have gloated?
V-ing perfect
could I have been gloating? could you have been gloating? could she have been gloating? could we have been gloating? could you have been gloating? could they have been gloating?
Interro-negative form
Simple form
couldn't I gloat? couldn't you gloat? couldn't she gloat? couldn't we gloat? couldn't you gloat? couldn't they gloat?
V-ing form
couldn't I be gloating? couldn't you be gloating? couldn't she be gloating? couldn't we be gloating? couldn't you be gloating? couldn't they be gloating?
Perfect
couldn't I have gloated? couldn't you have gloated? couldn't she have gloated? couldn't we have gloated? couldn't you have gloated? couldn't they have gloated?
V-ing perfect
couldn't I have been gloating? couldn't you have been gloating? couldn't she have been gloating? couldn't we have been gloating? couldn't you have been gloating? couldn't they have been gloating?