I should leister you should leister he should leister we should leister you should leister they should leister
V-ing form
I should be leistering you should be leistering he should be leistering we should be leistering you should be leistering they should be leistering
Perfect
I should have leistered you should have leistered he should have leistered we should have leistered you should have leistered they should have leistered
V-ing perfect
I should have been leistering you should have been leistering he should have been leistering we should have been leistering you should have been leistering they should have been leistering
Negation
Simple form
I should not leister you should not leister he should not leister we should not leister you should not leister they should not leister
V-ing form
I should not be leistering you should not be leistering he should not be leistering we should not be leistering you should not be leistering they should not be leistering
Perfect
I should not have leistered you should not have leistered he should not have leistered we should not have leistered you should not have leistered they should not have leistered
V-ing perfect
I should not have been leistering you should not have been leistering he should not have been leistering we should not have been leistering you should not have been leistering they should not have been leistering
Interrogative form
Simple form
should I leister? should you leister? should he leister? should we leister? should you leister? should they leister?
V-ing form
should I be leistering? should you be leistering? should he be leistering? should we be leistering? should you be leistering? should they be leistering?
Perfect
should I have leistered? should you have leistered? should he have leistered? should we have leistered? should you have leistered? should they have leistered?
V-ing perfect
should I have been leistering? should you have been leistering? should he have been leistering? should we have been leistering? should you have been leistering? should they have been leistering?
Interro-negative form
Simple form
should I not leister? should you not leister? should he not leister? should we not leister? should you not leister? should they not leister?
V-ing form
should I not be leistering? should you not be leistering? should he not be leistering? should we not be leistering? should you not be leistering? should they not be leistering?
Perfect
should I not have leistered? should you not have leistered? should he not have leistered? should we not have leistered? should you not have leistered? should they not have leistered?
V-ing perfect
should I not have been leistering? should you not have been leistering? should he not have been leistering? should we not have been leistering? should you not have been leistering? should they not have been leistering?