I should perch you should perch he should perch we should perch you should perch they should perch
V-ing form
I should be perching you should be perching he should be perching we should be perching you should be perching they should be perching
Perfect
I should have perched you should have perched he should have perched we should have perched you should have perched they should have perched
V-ing perfect
I should have been perching you should have been perching he should have been perching we should have been perching you should have been perching they should have been perching
Negation
Simple form
I should not perch you should not perch he should not perch we should not perch you should not perch they should not perch
V-ing form
I should not be perching you should not be perching he should not be perching we should not be perching you should not be perching they should not be perching
Perfect
I should not have perched you should not have perched he should not have perched we should not have perched you should not have perched they should not have perched
V-ing perfect
I should not have been perching you should not have been perching he should not have been perching we should not have been perching you should not have been perching they should not have been perching
Interrogative form
Simple form
should I perch? should you perch? should he perch? should we perch? should you perch? should they perch?
V-ing form
should I be perching? should you be perching? should he be perching? should we be perching? should you be perching? should they be perching?
Perfect
should I have perched? should you have perched? should he have perched? should we have perched? should you have perched? should they have perched?
V-ing perfect
should I have been perching? should you have been perching? should he have been perching? should we have been perching? should you have been perching? should they have been perching?
Interro-negative form
Simple form
should I not perch? should you not perch? should he not perch? should we not perch? should you not perch? should they not perch?
V-ing form
should I not be perching? should you not be perching? should he not be perching? should we not be perching? should you not be perching? should they not be perching?
Perfect
should I not have perched? should you not have perched? should he not have perched? should we not have perched? should you not have perched? should they not have perched?
V-ing perfect
should I not have been perching? should you not have been perching? should he not have been perching? should we not have been perching? should you not have been perching? should they not have been perching?