I'd be handwashing you'd be handwashing he'd be handwashing we'd be handwashing you'd be handwashing they'd be handwashing
Perfect
I should've handwashed you should've handwashed he should've handwashed we should've handwashed you should've handwashed they should've handwashed
V-ing perfect
I should've been handwashing you should've been handwashing he should've been handwashing we should've been handwashing you should've been handwashing they should've been handwashing
Negation
Simple form
I shouldn't handwash you shouldn't handwash he shouldn't handwash we shouldn't handwash you shouldn't handwash they shouldn't handwash
V-ing form
I shouldn't be handwashing you shouldn't be handwashing he shouldn't be handwashing we shouldn't be handwashing you shouldn't be handwashing they shouldn't be handwashing
Perfect
I shouldn't have handwashed you shouldn't have handwashed he shouldn't have handwashed we shouldn't have handwashed you shouldn't have handwashed they shouldn't have handwashed
V-ing perfect
I shouldn't have been handwashing you shouldn't have been handwashing he shouldn't have been handwashing we shouldn't have been handwashing you shouldn't have been handwashing they shouldn't have been handwashing
Interrogative form
Simple form
should I handwash? should you handwash? should he handwash? should we handwash? should you handwash? should they handwash?
V-ing form
should I be handwashing? should you be handwashing? should he be handwashing? should we be handwashing? should you be handwashing? should they be handwashing?
Perfect
should I have handwashed? should you have handwashed? should he have handwashed? should we have handwashed? should you have handwashed? should they have handwashed?
V-ing perfect
should I have been handwashing? should you have been handwashing? should he have been handwashing? should we have been handwashing? should you have been handwashing? should they have been handwashing?
Interro-negative form
Simple form
shouldn't I handwash? shouldn't you handwash? shouldn't he handwash? shouldn't we handwash? shouldn't you handwash? shouldn't they handwash?
V-ing form
shouldn't I be handwashing? shouldn't you be handwashing? shouldn't he be handwashing? shouldn't we be handwashing? shouldn't you be handwashing? shouldn't they be handwashing?
Perfect
shouldn't I have handwashed? shouldn't you have handwashed? shouldn't he have handwashed? shouldn't we have handwashed? shouldn't you have handwashed? shouldn't they have handwashed?
V-ing perfect
shouldn't I have been handwashing? shouldn't you have been handwashing? shouldn't he have been handwashing? shouldn't we have been handwashing? shouldn't you have been handwashing? shouldn't they have been handwashing?