English verb conjugation
SHOULD ASSUME

Regular verb: assume - assumed - assumed

Affirmation

Simple form	V-ing form
I'd assume you'd assume he'd assume we'd assume you'd assume they'd assume	I'd be assuming you'd be assuming he'd be assuming we'd be assuming you'd be assuming they'd be assuming
Perfect	V-ing perfect
I should've assumed you should've assumed he should've assumed we should've assumed you should've assumed they should've assumed	I should've been assuming you should've been assuming he should've been assuming we should've been assuming you should've been assuming they should've been assuming

Negation

Simple form	V-ing form
I shouldn't assume you shouldn't assume he shouldn't assume we shouldn't assume you shouldn't assume they shouldn't assume	I shouldn't be assuming you shouldn't be assuming he shouldn't be assuming we shouldn't be assuming you shouldn't be assuming they shouldn't be assuming
Perfect	V-ing perfect
I shouldn't have assumed you shouldn't have assumed he shouldn't have assumed we shouldn't have assumed you shouldn't have assumed they shouldn't have assumed	I shouldn't have been assuming you shouldn't have been assuming he shouldn't have been assuming we shouldn't have been assuming you shouldn't have been assuming they shouldn't have been assuming

Interrogative form

Simple form	V-ing form
should I assume? should you assume? should he assume? should we assume? should you assume? should they assume?	should I be assuming? should you be assuming? should he be assuming? should we be assuming? should you be assuming? should they be assuming?
Perfect	V-ing perfect
should I have assumed? should you have assumed? should he have assumed? should we have assumed? should you have assumed? should they have assumed?	should I have been assuming? should you have been assuming? should he have been assuming? should we have been assuming? should you have been assuming? should they have been assuming?

Interro-negative form

Simple form	V-ing form
shouldn't I assume? shouldn't you assume? shouldn't he assume? shouldn't we assume? shouldn't you assume? shouldn't they assume?	shouldn't I be assuming? shouldn't you be assuming? shouldn't he be assuming? shouldn't we be assuming? shouldn't you be assuming? shouldn't they be assuming?
Perfect	V-ing perfect
shouldn't I have assumed? shouldn't you have assumed? shouldn't he have assumed? shouldn't we have assumed? shouldn't you have assumed? shouldn't they have assumed?	shouldn't I have been assuming? shouldn't you have been assuming? shouldn't he have been assuming? shouldn't we have been assuming? shouldn't you have been assuming? shouldn't they have been assuming?