I should preformulate you should preformulate he should preformulate we should preformulate you should preformulate they should preformulate
V-ing form
I should be preformulating you should be preformulating he should be preformulating we should be preformulating you should be preformulating they should be preformulating
Perfect
I should have preformulated you should have preformulated he should have preformulated we should have preformulated you should have preformulated they should have preformulated
V-ing perfect
I should have been preformulating you should have been preformulating he should have been preformulating we should have been preformulating you should have been preformulating they should have been preformulating
Negation
Simple form
I should not preformulate you should not preformulate he should not preformulate we should not preformulate you should not preformulate they should not preformulate
V-ing form
I should not be preformulating you should not be preformulating he should not be preformulating we should not be preformulating you should not be preformulating they should not be preformulating
Perfect
I should not have preformulated you should not have preformulated he should not have preformulated we should not have preformulated you should not have preformulated they should not have preformulated
V-ing perfect
I should not have been preformulating you should not have been preformulating he should not have been preformulating we should not have been preformulating you should not have been preformulating they should not have been preformulating
Interrogative form
Simple form
should I preformulate? should you preformulate? should he preformulate? should we preformulate? should you preformulate? should they preformulate?
V-ing form
should I be preformulating? should you be preformulating? should he be preformulating? should we be preformulating? should you be preformulating? should they be preformulating?
Perfect
should I have preformulated? should you have preformulated? should he have preformulated? should we have preformulated? should you have preformulated? should they have preformulated?
V-ing perfect
should I have been preformulating? should you have been preformulating? should he have been preformulating? should we have been preformulating? should you have been preformulating? should they have been preformulating?
Interro-negative form
Simple form
should I not preformulate? should you not preformulate? should he not preformulate? should we not preformulate? should you not preformulate? should they not preformulate?
V-ing form
should I not be preformulating? should you not be preformulating? should he not be preformulating? should we not be preformulating? should you not be preformulating? should they not be preformulating?
Perfect
should I not have preformulated? should you not have preformulated? should he not have preformulated? should we not have preformulated? should you not have preformulated? should they not have preformulated?
V-ing perfect
should I not have been preformulating? should you not have been preformulating? should he not have been preformulating? should we not have been preformulating? should you not have been preformulating? should they not have been preformulating?