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 could not smoulder you could not smoulder he could not smoulder we could not smoulder you could not smoulder they could not smoulder	I could not be smouldering you could not be smouldering he could not be smouldering we could not be smouldering you could not be smouldering they could not be smouldering
Perfect	V-ing perfect
I could not have smouldered you could not have smouldered he could not have smouldered we could not have smouldered you could not have smouldered they could not have smouldered	I could not have been smouldering you could not have been smouldering he could not have been smouldering we could not have been smouldering you could not have been smouldering they could not 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
could I not smoulder? could you not smoulder? could he not smoulder? could we not smoulder? could you not smoulder? could they not smoulder?	could I not be smouldering? could you not be smouldering? could he not be smouldering? could we not be smouldering? could you not be smouldering? could they not be smouldering?
Perfect	V-ing perfect
could I not have smouldered? could you not have smouldered? could he not have smouldered? could we not have smouldered? could you not have smouldered? could they not have smouldered?	could I not have been smouldering? could you not have been smouldering? could he not have been smouldering? could we not have been smouldering? could you not have been smouldering? could they not have been smouldering?