English verb conjugation
COULD SMOULDER

Regular verb: smoulder - smouldered - smouldered

Affirmation

Simple form	V-ing form
I could smoulder you could smoulder she could smoulder we could smoulder you could smoulder they could smoulder	I could be smouldering you could be smouldering she could be smouldering we could be smouldering you could be smouldering they could be smouldering
Perfect	V-ing perfect
I could have smouldered you could have smouldered she could have smouldered we could have smouldered you could have smouldered they could have smouldered	I could have been smouldering you could have been smouldering she could have been smouldering we could have been smouldering you could have been smouldering they could have been smouldering

Negation

Simple form	V-ing form
I couldn't smoulder you couldn't smoulder she couldn't smoulder we couldn't smoulder you couldn't smoulder they couldn't smoulder	I couldn't be smouldering you couldn't be smouldering she couldn't be smouldering we couldn't be smouldering you couldn't be smouldering they couldn't be smouldering
Perfect	V-ing perfect
I couldn't have smouldered you couldn't have smouldered she couldn't have smouldered we couldn't have smouldered you couldn't have smouldered they couldn't have smouldered	I couldn't have been smouldering you couldn't have been smouldering she couldn't have been smouldering we couldn't have been smouldering you couldn't have been smouldering they couldn't have been smouldering

Interrogative form

Simple form	V-ing form
could I smoulder? could you smoulder? could she smoulder? could we smoulder? could you smoulder? could they smoulder?	could I be smouldering? could you be smouldering? could she be smouldering? could we be smouldering? could you be smouldering? could they be smouldering?
Perfect	V-ing perfect
could I have smouldered? could you have smouldered? could she have smouldered? could we have smouldered? could you have smouldered? could they have smouldered?	could I have been smouldering? could you have been smouldering? could she have been smouldering? could we have been smouldering? could you have been smouldering? could they have been smouldering?

Interro-negative form

Simple form	V-ing form
couldn't I smoulder? couldn't you smoulder? couldn't she smoulder? couldn't we smoulder? couldn't you smoulder? couldn't they smoulder?	couldn't I be smouldering? couldn't you be smouldering? couldn't she be smouldering? couldn't we be smouldering? couldn't you be smouldering? couldn't they be smouldering?
Perfect	V-ing perfect
couldn't I have smouldered? couldn't you have smouldered? couldn't she have smouldered? couldn't we have smouldered? couldn't you have smouldered? couldn't they have smouldered?	couldn't I have been smouldering? couldn't you have been smouldering? couldn't she have been smouldering? couldn't we have been smouldering? couldn't you have been smouldering? couldn't they have been smouldering?