could lump
Regular verb: lump - lumped- lumped

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