English verb conjugation
CAN LUMP

Regular verb: lump - lumped - lumped

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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