can assemble
Regular verb: assemble - assembled- assembled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can assemble
you can assemble
he can assemble
we can assemble
you can assemble
they can assemble 	I can be assembling
you can be assembling
he can be assembling
we can be assembling
you can be assembling
they can be assembling	I can have assembled
you can have assembled
he can have assembled
we can have assembled
you can have assembled
they can have assembled	I can have been assembling
you can have been assembling
he can have been assembling
we can have been assembling
you can have been assembling
they can have been assembling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't assemble
you can't assemble
he can't assemble
we can't assemble
you can't assemble
they can't assemble 	I can't be assembling
you can't be assembling
he can't be assembling
we can't be assembling
you can't be assembling
they can't be assembling	I can't have assembled
you can't have assembled
he can't have assembled
we can't have assembled
you can't have assembled
they can't have assembled	I can't have been assembling
you can't have been assembling
he can't have been assembling
we can't have been assembling
you can't have been assembling
they can't have been assembling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I assemble?
can you assemble?
can he assemble?
can we assemble?
can you assemble?
can they assemble? 	can I be assembling?
can you be assembling?
can he be assembling?
can we be assembling?
can you be assembling?
can they be assembling? 	can I have assembled?
can you have assembled?
can he have assembled?
can we have assembled?
can you have assembled?
can they have assembled? 	can I have been assembling?
can you have been assembling?
can he have been assembling?
can we have been assembling?
can you have been assembling?
can they have been assembling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I assemble?
can't you assemble?
can't he assemble?
can't we assemble?
can't you assemble?
can't they assemble? 	can't I be assembling?
can't you be assembling?
can't he be assembling?
can't we be assembling?
can't you be assembling?
can't they be assembling? 	can't I have assembled?
can't you have assembled?
can't he have assembled?
can't we have assembled?
can't you have assembled?
can't they have assembled? 	can't I have been assembling?
can't you have been assembling?
can't he have been assembling?
can't we have been assembling?
can't you have been assembling?
can't they have been assembling?