could defragment
Regular verb: defragment - defragmented- defragmented

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could defragment
you could defragment
he could defragment
we could defragment
you could defragment
they could defragment 	I could be defragmenting
you could be defragmenting
he could be defragmenting
we could be defragmenting
you could be defragmenting
they could be defragmenting	I could have defragmented
you could have defragmented
he could have defragmented
we could have defragmented
you could have defragmented
they could have defragmented	I could have been defragmenting
you could have been defragmenting
he could have been defragmenting
we could have been defragmenting
you could have been defragmenting
they could have been defragmenting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not defragment
you could not defragment
he could not defragment
we could not defragment
you could not defragment
they could not defragment 	I could not be defragmenting
you could not be defragmenting
he could not be defragmenting
we could not be defragmenting
you could not be defragmenting
they could not be defragmenting	I could not have defragmented
you could not have defragmented
he could not have defragmented
we could not have defragmented
you could not have defragmented
they could not have defragmented	I could not have been defragmenting
you could not have been defragmenting
he could not have been defragmenting
we could not have been defragmenting
you could not have been defragmenting
they could not have been defragmenting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I defragment?
could you defragment?
could he defragment?
could we defragment?
could you defragment?
could they defragment? 	could I be defragmenting?
could you be defragmenting?
could he be defragmenting?
could we be defragmenting?
could you be defragmenting?
could they be defragmenting? 	could I have defragmented?
could you have defragmented?
could he have defragmented?
could we have defragmented?
could you have defragmented?
could they have defragmented? 	could I have been defragmenting?
could you have been defragmenting?
could he have been defragmenting?
could we have been defragmenting?
could you have been defragmenting?
could they have been defragmenting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not defragment?
could you not defragment?
could he not defragment?
could we not defragment?
could you not defragment?
could they not defragment? 	could I not be defragmenting?
could you not be defragmenting?
could he not be defragmenting?
could we not be defragmenting?
could you not be defragmenting?
could they not be defragmenting? 	could I not have defragmented?
could you not have defragmented?
could he not have defragmented?
could we not have defragmented?
could you not have defragmented?
could they not have defragmented? 	could I not have been defragmenting?
could you not have been defragmenting?
could he not have been defragmenting?
could we not have been defragmenting?
could you not have been defragmenting?
could they not have been defragmenting?