I'd be estimating you'd be estimating she'd be estimating we'd be estimating you'd be estimating they'd be estimating
Perfect
I should've estimated you should've estimated she should've estimated we should've estimated you should've estimated they should've estimated
V-ing perfect
I should've been estimating you should've been estimating she should've been estimating we should've been estimating you should've been estimating they should've been estimating
Negation
Simple form
I shouldn't estimate you shouldn't estimate she shouldn't estimate we shouldn't estimate you shouldn't estimate they shouldn't estimate
V-ing form
I shouldn't be estimating you shouldn't be estimating she shouldn't be estimating we shouldn't be estimating you shouldn't be estimating they shouldn't be estimating
Perfect
I shouldn't have estimated you shouldn't have estimated she shouldn't have estimated we shouldn't have estimated you shouldn't have estimated they shouldn't have estimated
V-ing perfect
I shouldn't have been estimating you shouldn't have been estimating she shouldn't have been estimating we shouldn't have been estimating you shouldn't have been estimating they shouldn't have been estimating
Interrogative form
Simple form
should I estimate? should you estimate? should she estimate? should we estimate? should you estimate? should they estimate?
V-ing form
should I be estimating? should you be estimating? should she be estimating? should we be estimating? should you be estimating? should they be estimating?
Perfect
should I have estimated? should you have estimated? should she have estimated? should we have estimated? should you have estimated? should they have estimated?
V-ing perfect
should I have been estimating? should you have been estimating? should she have been estimating? should we have been estimating? should you have been estimating? should they have been estimating?
Interro-negative form
Simple form
shouldn't I estimate? shouldn't you estimate? shouldn't she estimate? shouldn't we estimate? shouldn't you estimate? shouldn't they estimate?
V-ing form
shouldn't I be estimating? shouldn't you be estimating? shouldn't she be estimating? shouldn't we be estimating? shouldn't you be estimating? shouldn't they be estimating?
Perfect
shouldn't I have estimated? shouldn't you have estimated? shouldn't she have estimated? shouldn't we have estimated? shouldn't you have estimated? shouldn't they have estimated?
V-ing perfect
shouldn't I have been estimating? shouldn't you have been estimating? shouldn't she have been estimating? shouldn't we have been estimating? shouldn't you have been estimating? shouldn't they have been estimating?