I should fax you should fax she should fax we should fax you should fax they should fax
V-ing form
I should be faxing you should be faxing she should be faxing we should be faxing you should be faxing they should be faxing
Perfect
I should have faxed you should have faxed she should have faxed we should have faxed you should have faxed they should have faxed
V-ing perfect
I should have been faxing you should have been faxing she should have been faxing we should have been faxing you should have been faxing they should have been faxing
Negation
Simple form
I should not fax you should not fax she should not fax we should not fax you should not fax they should not fax
V-ing form
I should not be faxing you should not be faxing she should not be faxing we should not be faxing you should not be faxing they should not be faxing
Perfect
I should not have faxed you should not have faxed she should not have faxed we should not have faxed you should not have faxed they should not have faxed
V-ing perfect
I should not have been faxing you should not have been faxing she should not have been faxing we should not have been faxing you should not have been faxing they should not have been faxing
Interrogative form
Simple form
should I fax? should you fax? should she fax? should we fax? should you fax? should they fax?
V-ing form
should I be faxing? should you be faxing? should she be faxing? should we be faxing? should you be faxing? should they be faxing?
Perfect
should I have faxed? should you have faxed? should she have faxed? should we have faxed? should you have faxed? should they have faxed?
V-ing perfect
should I have been faxing? should you have been faxing? should she have been faxing? should we have been faxing? should you have been faxing? should they have been faxing?
Interro-negative form
Simple form
should I not fax? should you not fax? should she not fax? should we not fax? should you not fax? should they not fax?
V-ing form
should I not be faxing? should you not be faxing? should she not be faxing? should we not be faxing? should you not be faxing? should they not be faxing?
Perfect
should I not have faxed? should you not have faxed? should she not have faxed? should we not have faxed? should you not have faxed? should they not have faxed?
V-ing perfect
should I not have been faxing? should you not have been faxing? should she not have been faxing? should we not have been faxing? should you not have been faxing? should they not have been faxing?