I can screech you can screech he can screech we can screech you can screech they can screech
V-ing form
I can be screeching you can be screeching he can be screeching we can be screeching you can be screeching they can be screeching
Perfect
I can have screeched you can have screeched he can have screeched we can have screeched you can have screeched they can have screeched
V-ing perfect
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
I can't screech you can't screech he can't screech we can't screech you can't screech they can't screech
V-ing form
I can't be screeching you can't be screeching he can't be screeching we can't be screeching you can't be screeching they can't be screeching
Perfect
I can't have screeched you can't have screeched he can't have screeched we can't have screeched you can't have screeched they can't have screeched
V-ing perfect
I can't have been screeching you can't have been screeching he can't have been screeching we can't have been screeching you can't have been screeching they can't have been screeching
Interrogative form
Simple form
can I screech? can you screech? can he screech? can we screech? can you screech? can they screech?
V-ing form
can I be screeching? can you be screeching? can he be screeching? can we be screeching? can you be screeching? can they be screeching?
Perfect
can I have screeched? can you have screeched? can he have screeched? can we have screeched? can you have screeched? can they have screeched?
V-ing perfect
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
can't I screech? can't you screech? can't he screech? can't we screech? can't you screech? can't they screech?
V-ing form
can't I be screeching? can't you be screeching? can't he be screeching? can't we be screeching? can't you be screeching? can't they be screeching?
Perfect
can't I have screeched? can't you have screeched? can't he have screeched? can't we have screeched? can't you have screeched? can't they have screeched?
V-ing perfect
can't I have been screeching? can't you have been screeching? can't he have been screeching? can't we have been screeching? can't you have been screeching? can't they have been screeching?