English verb conjugation
COULD CLAM

Regular verb: clam - clamed - clamed

Affirmation

Simple form	V-ing form
I could clam you could clam she could clam we could clam you could clam they could clam	I could be claming you could be claming she could be claming we could be claming you could be claming they could be claming
Perfect	V-ing perfect
I could have clamed you could have clamed she could have clamed we could have clamed you could have clamed they could have clamed	I could have been claming you could have been claming she could have been claming we could have been claming you could have been claming they could have been claming

Negation

Simple form	V-ing form
I couldn't clam you couldn't clam she couldn't clam we couldn't clam you couldn't clam they couldn't clam	I couldn't be claming you couldn't be claming she couldn't be claming we couldn't be claming you couldn't be claming they couldn't be claming
Perfect	V-ing perfect
I couldn't have clamed you couldn't have clamed she couldn't have clamed we couldn't have clamed you couldn't have clamed they couldn't have clamed	I couldn't have been claming you couldn't have been claming she couldn't have been claming we couldn't have been claming you couldn't have been claming they couldn't have been claming

Interrogative form

Simple form	V-ing form
could I clam? could you clam? could she clam? could we clam? could you clam? could they clam?	could I be claming? could you be claming? could she be claming? could we be claming? could you be claming? could they be claming?
Perfect	V-ing perfect
could I have clamed? could you have clamed? could she have clamed? could we have clamed? could you have clamed? could they have clamed?	could I have been claming? could you have been claming? could she have been claming? could we have been claming? could you have been claming? could they have been claming?

Interro-negative form

Simple form	V-ing form
couldn't I clam? couldn't you clam? couldn't she clam? couldn't we clam? couldn't you clam? couldn't they clam?	couldn't I be claming? couldn't you be claming? couldn't she be claming? couldn't we be claming? couldn't you be claming? couldn't they be claming?
Perfect	V-ing perfect
couldn't I have clamed? couldn't you have clamed? couldn't she have clamed? couldn't we have clamed? couldn't you have clamed? couldn't they have clamed?	couldn't I have been claming? couldn't you have been claming? couldn't she have been claming? couldn't we have been claming? couldn't you have been claming? couldn't they have been claming?