English verb conjugation
COULD SMOULDER

Regular verb: smoulder - smouldered - smouldered

Affirmation

Simple form	V-ing form
I could smoulder you could smoulder he could smoulder we could smoulder you could smoulder they could smoulder	I could be smouldering you could be smouldering he 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 he 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 he 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 he 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 he 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 he 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 he 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 he smoulder? could we smoulder? could you smoulder? could they smoulder?	could I be smouldering? could you be smouldering? could he 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 he 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 he 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 he 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 he 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 he 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 he have been smouldering? couldn't we have been smouldering? couldn't you have been smouldering? couldn't they have been smouldering?