I should collar you should collar he should collar we should collar you should collar they should collar
V-ing form
I should be collaring you should be collaring he should be collaring we should be collaring you should be collaring they should be collaring
Perfect
I should have collared you should have collared he should have collared we should have collared you should have collared they should have collared
V-ing perfect
I should have been collaring you should have been collaring he should have been collaring we should have been collaring you should have been collaring they should have been collaring
Negation
Simple form
I should not collar you should not collar he should not collar we should not collar you should not collar they should not collar
V-ing form
I should not be collaring you should not be collaring he should not be collaring we should not be collaring you should not be collaring they should not be collaring
Perfect
I should not have collared you should not have collared he should not have collared we should not have collared you should not have collared they should not have collared
V-ing perfect
I should not have been collaring you should not have been collaring he should not have been collaring we should not have been collaring you should not have been collaring they should not have been collaring
Interrogative form
Simple form
should I collar? should you collar? should he collar? should we collar? should you collar? should they collar?
V-ing form
should I be collaring? should you be collaring? should he be collaring? should we be collaring? should you be collaring? should they be collaring?
Perfect
should I have collared? should you have collared? should he have collared? should we have collared? should you have collared? should they have collared?
V-ing perfect
should I have been collaring? should you have been collaring? should he have been collaring? should we have been collaring? should you have been collaring? should they have been collaring?
Interro-negative form
Simple form
should I not collar? should you not collar? should he not collar? should we not collar? should you not collar? should they not collar?
V-ing form
should I not be collaring? should you not be collaring? should he not be collaring? should we not be collaring? should you not be collaring? should they not be collaring?
Perfect
should I not have collared? should you not have collared? should he not have collared? should we not have collared? should you not have collared? should they not have collared?
V-ing perfect
should I not have been collaring? should you not have been collaring? should he not have been collaring? should we not have been collaring? should you not have been collaring? should they not have been collaring?