can infill
Regular verb: infill - infilled- infilled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can infill
you can infill
she can infill
we can infill
you can infill
they can infill 	I can be infilling
you can be infilling
she can be infilling
we can be infilling
you can be infilling
they can be infilling	I can have infilled
you can have infilled
she can have infilled
we can have infilled
you can have infilled
they can have infilled	I can have been infilling
you can have been infilling
she can have been infilling
we can have been infilling
you can have been infilling
they can have been infilling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot infill
you cannot infill
she cannot infill
we cannot infill
you cannot infill
they cannot infill 	I cannot be infilling
you cannot be infilling
she cannot be infilling
we cannot be infilling
you cannot be infilling
they cannot be infilling	I cannot have infilled
you cannot have infilled
she cannot have infilled
we cannot have infilled
you cannot have infilled
they cannot have infilled	I cannot have been infilling
you cannot have been infilling
she cannot have been infilling
we cannot have been infilling
you cannot have been infilling
they cannot have been infilling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I infill?
can you infill?
can she infill?
can we infill?
can you infill?
can they infill? 	can I be infilling?
can you be infilling?
can she be infilling?
can we be infilling?
can you be infilling?
can they be infilling? 	can I have infilled?
can you have infilled?
can she have infilled?
can we have infilled?
can you have infilled?
can they have infilled? 	can I have been infilling?
can you have been infilling?
can she have been infilling?
can we have been infilling?
can you have been infilling?
can they have been infilling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not infill?
can you not infill?
can she not infill?
can we not infill?
can you not infill?
can they not infill? 	can I not be infilling?
can you not be infilling?
can she not be infilling?
can we not be infilling?
can you not be infilling?
can they not be infilling? 	can I not have infilled?
can you not have infilled?
can she not have infilled?
can we not have infilled?
can you not have infilled?
can they not have infilled? 	can I not have been infilling?
can you not have been infilling?
can she not have been infilling?
can we not have been infilling?
can you not have been infilling?
can they not have been infilling?