English verb conjugation
COULD LUMP

Regular verb: lump - lumped - lumped

Affirmation

Simple form	V-ing form
I could lump you could lump he could lump we could lump you could lump they could lump	I could be lumping you could be lumping he could be lumping we could be lumping you could be lumping they could be lumping
Perfect	V-ing perfect
I could have lumped you could have lumped he could have lumped we could have lumped you could have lumped they could have lumped	I could have been lumping you could have been lumping he could have been lumping we could have been lumping you could have been lumping they could have been lumping

Negation

Simple form	V-ing form
I couldn't lump you couldn't lump he couldn't lump we couldn't lump you couldn't lump they couldn't lump	I couldn't be lumping you couldn't be lumping he couldn't be lumping we couldn't be lumping you couldn't be lumping they couldn't be lumping
Perfect	V-ing perfect
I couldn't have lumped you couldn't have lumped he couldn't have lumped we couldn't have lumped you couldn't have lumped they couldn't have lumped	I couldn't have been lumping you couldn't have been lumping he couldn't have been lumping we couldn't have been lumping you couldn't have been lumping they couldn't have been lumping

Interrogative form

Simple form	V-ing form
could I lump? could you lump? could he lump? could we lump? could you lump? could they lump?	could I be lumping? could you be lumping? could he be lumping? could we be lumping? could you be lumping? could they be lumping?
Perfect	V-ing perfect
could I have lumped? could you have lumped? could he have lumped? could we have lumped? could you have lumped? could they have lumped?	could I have been lumping? could you have been lumping? could he have been lumping? could we have been lumping? could you have been lumping? could they have been lumping?

Interro-negative form

Simple form	V-ing form
couldn't I lump? couldn't you lump? couldn't he lump? couldn't we lump? couldn't you lump? couldn't they lump?	couldn't I be lumping? couldn't you be lumping? couldn't he be lumping? couldn't we be lumping? couldn't you be lumping? couldn't they be lumping?
Perfect	V-ing perfect
couldn't I have lumped? couldn't you have lumped? couldn't he have lumped? couldn't we have lumped? couldn't you have lumped? couldn't they have lumped?	couldn't I have been lumping? couldn't you have been lumping? couldn't he have been lumping? couldn't we have been lumping? couldn't you have been lumping? couldn't they have been lumping?