can screech
Regular verb: screech - screeched- screeched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can screech
you can screech
he can screech
we can screech
you can screech
they can screech 	I can be screeching
you can be screeching
he can be screeching
we can be screeching
you can be screeching
they can be screeching	I can have screeched
you can have screeched
he can have screeched
we can have screeched
you can have screeched
they can have screeched	I can have been screeching
you can have been screeching
he can have been screeching
we can have been screeching
you can have been screeching
they can have been screeching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot screech
you cannot screech
he cannot screech
we cannot screech
you cannot screech
they cannot screech 	I cannot be screeching
you cannot be screeching
he cannot be screeching
we cannot be screeching
you cannot be screeching
they cannot be screeching	I cannot have screeched
you cannot have screeched
he cannot have screeched
we cannot have screeched
you cannot have screeched
they cannot have screeched	I cannot have been screeching
you cannot have been screeching
he cannot have been screeching
we cannot have been screeching
you cannot have been screeching
they cannot have been screeching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I screech?
can you screech?
can he screech?
can we screech?
can you screech?
can they screech? 	can I be screeching?
can you be screeching?
can he be screeching?
can we be screeching?
can you be screeching?
can they be screeching? 	can I have screeched?
can you have screeched?
can he have screeched?
can we have screeched?
can you have screeched?
can they have screeched? 	can I have been screeching?
can you have been screeching?
can he have been screeching?
can we have been screeching?
can you have been screeching?
can they have been screeching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not screech?
can you not screech?
can he not screech?
can we not screech?
can you not screech?
can they not screech? 	can I not be screeching?
can you not be screeching?
can he not be screeching?
can we not be screeching?
can you not be screeching?
can they not be screeching? 	can I not have screeched?
can you not have screeched?
can he not have screeched?
can we not have screeched?
can you not have screeched?
can they not have screeched? 	can I not have been screeching?
can you not have been screeching?
can he not have been screeching?
can we not have been screeching?
can you not have been screeching?
can they not have been screeching?