could radiolabel
Regular verb: radiolabel - radiolabeled- radiolabeled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could radiolabel
you could radiolabel
she could radiolabel
we could radiolabel
you could radiolabel
they could radiolabel 	I could be radiolabeling
you could be radiolabeling
she could be radiolabeling
we could be radiolabeling
you could be radiolabeling
they could be radiolabeling	I could have radiolabeled
you could have radiolabeled
she could have radiolabeled
we could have radiolabeled
you could have radiolabeled
they could have radiolabeled	I could have been radiolabeling
you could have been radiolabeling
she could have been radiolabeling
we could have been radiolabeling
you could have been radiolabeling
they could have been radiolabeling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not radiolabel
you could not radiolabel
she could not radiolabel
we could not radiolabel
you could not radiolabel
they could not radiolabel 	I could not be radiolabeling
you could not be radiolabeling
she could not be radiolabeling
we could not be radiolabeling
you could not be radiolabeling
they could not be radiolabeling	I could not have radiolabeled
you could not have radiolabeled
she could not have radiolabeled
we could not have radiolabeled
you could not have radiolabeled
they could not have radiolabeled	I could not have been radiolabeling
you could not have been radiolabeling
she could not have been radiolabeling
we could not have been radiolabeling
you could not have been radiolabeling
they could not have been radiolabeling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I radiolabel?
could you radiolabel?
could she radiolabel?
could we radiolabel?
could you radiolabel?
could they radiolabel? 	could I be radiolabeling?
could you be radiolabeling?
could she be radiolabeling?
could we be radiolabeling?
could you be radiolabeling?
could they be radiolabeling? 	could I have radiolabeled?
could you have radiolabeled?
could she have radiolabeled?
could we have radiolabeled?
could you have radiolabeled?
could they have radiolabeled? 	could I have been radiolabeling?
could you have been radiolabeling?
could she have been radiolabeling?
could we have been radiolabeling?
could you have been radiolabeling?
could they have been radiolabeling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not radiolabel?
could you not radiolabel?
could she not radiolabel?
could we not radiolabel?
could you not radiolabel?
could they not radiolabel? 	could I not be radiolabeling?
could you not be radiolabeling?
could she not be radiolabeling?
could we not be radiolabeling?
could you not be radiolabeling?
could they not be radiolabeling? 	could I not have radiolabeled?
could you not have radiolabeled?
could she not have radiolabeled?
could we not have radiolabeled?
could you not have radiolabeled?
could they not have radiolabeled? 	could I not have been radiolabeling?
could you not have been radiolabeling?
could she not have been radiolabeling?
could we not have been radiolabeling?
could you not have been radiolabeling?
could they not have been radiolabeling?