could preformat
Regular verb: preformat - preformated- preformated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could preformat
you could preformat
he could preformat
we could preformat
you could preformat
they could preformat 	I could be preformating
you could be preformating
he could be preformating
we could be preformating
you could be preformating
they could be preformating	I could have preformated
you could have preformated
he could have preformated
we could have preformated
you could have preformated
they could have preformated	I could have been preformating
you could have been preformating
he could have been preformating
we could have been preformating
you could have been preformating
they could have been preformating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not preformat
you could not preformat
he could not preformat
we could not preformat
you could not preformat
they could not preformat 	I could not be preformating
you could not be preformating
he could not be preformating
we could not be preformating
you could not be preformating
they could not be preformating	I could not have preformated
you could not have preformated
he could not have preformated
we could not have preformated
you could not have preformated
they could not have preformated	I could not have been preformating
you could not have been preformating
he could not have been preformating
we could not have been preformating
you could not have been preformating
they could not have been preformating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I preformat?
could you preformat?
could he preformat?
could we preformat?
could you preformat?
could they preformat? 	could I be preformating?
could you be preformating?
could he be preformating?
could we be preformating?
could you be preformating?
could they be preformating? 	could I have preformated?
could you have preformated?
could he have preformated?
could we have preformated?
could you have preformated?
could they have preformated? 	could I have been preformating?
could you have been preformating?
could he have been preformating?
could we have been preformating?
could you have been preformating?
could they have been preformating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not preformat?
could you not preformat?
could he not preformat?
could we not preformat?
could you not preformat?
could they not preformat? 	could I not be preformating?
could you not be preformating?
could he not be preformating?
could we not be preformating?
could you not be preformating?
could they not be preformating? 	could I not have preformated?
could you not have preformated?
could he not have preformated?
could we not have preformated?
could you not have preformated?
could they not have preformated? 	could I not have been preformating?
could you not have been preformating?
could he not have been preformating?
could we not have been preformating?
could you not have been preformating?
could they not have been preformating?