could tut
Regular verb: tut - tuted- tuted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could tut
you could tut
she could tut
we could tut
you could tut
they could tut 	I could be tuting
you could be tuting
she could be tuting
we could be tuting
you could be tuting
they could be tuting	I could have tuted
you could have tuted
she could have tuted
we could have tuted
you could have tuted
they could have tuted	I could have been tuting
you could have been tuting
she could have been tuting
we could have been tuting
you could have been tuting
they could have been tuting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not tut
you could not tut
she could not tut
we could not tut
you could not tut
they could not tut 	I could not be tuting
you could not be tuting
she could not be tuting
we could not be tuting
you could not be tuting
they could not be tuting	I could not have tuted
you could not have tuted
she could not have tuted
we could not have tuted
you could not have tuted
they could not have tuted	I could not have been tuting
you could not have been tuting
she could not have been tuting
we could not have been tuting
you could not have been tuting
they could not have been tuting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I tut?
could you tut?
could she tut?
could we tut?
could you tut?
could they tut? 	could I be tuting?
could you be tuting?
could she be tuting?
could we be tuting?
could you be tuting?
could they be tuting? 	could I have tuted?
could you have tuted?
could she have tuted?
could we have tuted?
could you have tuted?
could they have tuted? 	could I have been tuting?
could you have been tuting?
could she have been tuting?
could we have been tuting?
could you have been tuting?
could they have been tuting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not tut?
could you not tut?
could she not tut?
could we not tut?
could you not tut?
could they not tut? 	could I not be tuting?
could you not be tuting?
could she not be tuting?
could we not be tuting?
could you not be tuting?
could they not be tuting? 	could I not have tuted?
could you not have tuted?
could she not have tuted?
could we not have tuted?
could you not have tuted?
could they not have tuted? 	could I not have been tuting?
could you not have been tuting?
could she not have been tuting?
could we not have been tuting?
could you not have been tuting?
could they not have been tuting?