could tutor
Regular verb: tutor - tutored- tutored

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could tutor
you could tutor
he could tutor
we could tutor
you could tutor
they could tutor 	I could be tutoring
you could be tutoring
he could be tutoring
we could be tutoring
you could be tutoring
they could be tutoring	I could have tutored
you could have tutored
he could have tutored
we could have tutored
you could have tutored
they could have tutored	I could have been tutoring
you could have been tutoring
he could have been tutoring
we could have been tutoring
you could have been tutoring
they could have been tutoring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not tutor
you could not tutor
he could not tutor
we could not tutor
you could not tutor
they could not tutor 	I could not be tutoring
you could not be tutoring
he could not be tutoring
we could not be tutoring
you could not be tutoring
they could not be tutoring	I could not have tutored
you could not have tutored
he could not have tutored
we could not have tutored
you could not have tutored
they could not have tutored	I could not have been tutoring
you could not have been tutoring
he could not have been tutoring
we could not have been tutoring
you could not have been tutoring
they could not have been tutoring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I tutor?
could you tutor?
could he tutor?
could we tutor?
could you tutor?
could they tutor? 	could I be tutoring?
could you be tutoring?
could he be tutoring?
could we be tutoring?
could you be tutoring?
could they be tutoring? 	could I have tutored?
could you have tutored?
could he have tutored?
could we have tutored?
could you have tutored?
could they have tutored? 	could I have been tutoring?
could you have been tutoring?
could he have been tutoring?
could we have been tutoring?
could you have been tutoring?
could they have been tutoring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not tutor?
could you not tutor?
could he not tutor?
could we not tutor?
could you not tutor?
could they not tutor? 	could I not be tutoring?
could you not be tutoring?
could he not be tutoring?
could we not be tutoring?
could you not be tutoring?
could they not be tutoring? 	could I not have tutored?
could you not have tutored?
could he not have tutored?
could we not have tutored?
could you not have tutored?
could they not have tutored? 	could I not have been tutoring?
could you not have been tutoring?
could he not have been tutoring?
could we not have been tutoring?
could you not have been tutoring?
could they not have been tutoring?