can encumber
Regular verb: encumber - encumbered- encumbered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can encumber
you can encumber
he can encumber
we can encumber
you can encumber
they can encumber 	I can be encumbering
you can be encumbering
he can be encumbering
we can be encumbering
you can be encumbering
they can be encumbering	I can have encumbered
you can have encumbered
he can have encumbered
we can have encumbered
you can have encumbered
they can have encumbered	I can have been encumbering
you can have been encumbering
he can have been encumbering
we can have been encumbering
you can have been encumbering
they can have been encumbering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot encumber
you cannot encumber
he cannot encumber
we cannot encumber
you cannot encumber
they cannot encumber 	I cannot be encumbering
you cannot be encumbering
he cannot be encumbering
we cannot be encumbering
you cannot be encumbering
they cannot be encumbering	I cannot have encumbered
you cannot have encumbered
he cannot have encumbered
we cannot have encumbered
you cannot have encumbered
they cannot have encumbered	I cannot have been encumbering
you cannot have been encumbering
he cannot have been encumbering
we cannot have been encumbering
you cannot have been encumbering
they cannot have been encumbering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I encumber?
can you encumber?
can he encumber?
can we encumber?
can you encumber?
can they encumber? 	can I be encumbering?
can you be encumbering?
can he be encumbering?
can we be encumbering?
can you be encumbering?
can they be encumbering? 	can I have encumbered?
can you have encumbered?
can he have encumbered?
can we have encumbered?
can you have encumbered?
can they have encumbered? 	can I have been encumbering?
can you have been encumbering?
can he have been encumbering?
can we have been encumbering?
can you have been encumbering?
can they have been encumbering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not encumber?
can you not encumber?
can he not encumber?
can we not encumber?
can you not encumber?
can they not encumber? 	can I not be encumbering?
can you not be encumbering?
can he not be encumbering?
can we not be encumbering?
can you not be encumbering?
can they not be encumbering? 	can I not have encumbered?
can you not have encumbered?
can he not have encumbered?
can we not have encumbered?
can you not have encumbered?
can they not have encumbered? 	can I not have been encumbering?
can you not have been encumbering?
can he not have been encumbering?
can we not have been encumbering?
can you not have been encumbering?
can they not have been encumbering?