I should trickle you should trickle she should trickle we should trickle you should trickle they should trickle
V-ing form
I should be trickling you should be trickling she should be trickling we should be trickling you should be trickling they should be trickling
Perfect
I should have trickled you should have trickled she should have trickled we should have trickled you should have trickled they should have trickled
V-ing perfect
I should have been trickling you should have been trickling she should have been trickling we should have been trickling you should have been trickling they should have been trickling
Negation
Simple form
I should not trickle you should not trickle she should not trickle we should not trickle you should not trickle they should not trickle
V-ing form
I should not be trickling you should not be trickling she should not be trickling we should not be trickling you should not be trickling they should not be trickling
Perfect
I should not have trickled you should not have trickled she should not have trickled we should not have trickled you should not have trickled they should not have trickled
V-ing perfect
I should not have been trickling you should not have been trickling she should not have been trickling we should not have been trickling you should not have been trickling they should not have been trickling
Interrogative form
Simple form
should I trickle? should you trickle? should she trickle? should we trickle? should you trickle? should they trickle?
V-ing form
should I be trickling? should you be trickling? should she be trickling? should we be trickling? should you be trickling? should they be trickling?
Perfect
should I have trickled? should you have trickled? should she have trickled? should we have trickled? should you have trickled? should they have trickled?
V-ing perfect
should I have been trickling? should you have been trickling? should she have been trickling? should we have been trickling? should you have been trickling? should they have been trickling?
Interro-negative form
Simple form
should I not trickle? should you not trickle? should she not trickle? should we not trickle? should you not trickle? should they not trickle?
V-ing form
should I not be trickling? should you not be trickling? should she not be trickling? should we not be trickling? should you not be trickling? should they not be trickling?
Perfect
should I not have trickled? should you not have trickled? should she not have trickled? should we not have trickled? should you not have trickled? should they not have trickled?
V-ing perfect
should I not have been trickling? should you not have been trickling? should she not have been trickling? should we not have been trickling? should you not have been trickling? should they not have been trickling?