English verb conjugation
SHOULD CLASH

Regular verb: clash - clashed - clashed

Affirmation

Simple form	V-ing form
I'd clash you'd clash he'd clash we'd clash you'd clash they'd clash	I'd be clashing you'd be clashing he'd be clashing we'd be clashing you'd be clashing they'd be clashing
Perfect	V-ing perfect
I should've clashed you should've clashed he should've clashed we should've clashed you should've clashed they should've clashed	I should've been clashing you should've been clashing he should've been clashing we should've been clashing you should've been clashing they should've been clashing

Negation

Simple form	V-ing form
I shouldn't clash you shouldn't clash he shouldn't clash we shouldn't clash you shouldn't clash they shouldn't clash	I shouldn't be clashing you shouldn't be clashing he shouldn't be clashing we shouldn't be clashing you shouldn't be clashing they shouldn't be clashing
Perfect	V-ing perfect
I shouldn't have clashed you shouldn't have clashed he shouldn't have clashed we shouldn't have clashed you shouldn't have clashed they shouldn't have clashed	I shouldn't have been clashing you shouldn't have been clashing he shouldn't have been clashing we shouldn't have been clashing you shouldn't have been clashing they shouldn't have been clashing

Interrogative form

Simple form	V-ing form
should I clash? should you clash? should he clash? should we clash? should you clash? should they clash?	should I be clashing? should you be clashing? should he be clashing? should we be clashing? should you be clashing? should they be clashing?
Perfect	V-ing perfect
should I have clashed? should you have clashed? should he have clashed? should we have clashed? should you have clashed? should they have clashed?	should I have been clashing? should you have been clashing? should he have been clashing? should we have been clashing? should you have been clashing? should they have been clashing?

Interro-negative form

Simple form	V-ing form
shouldn't I clash? shouldn't you clash? shouldn't he clash? shouldn't we clash? shouldn't you clash? shouldn't they clash?	shouldn't I be clashing? shouldn't you be clashing? shouldn't he be clashing? shouldn't we be clashing? shouldn't you be clashing? shouldn't they be clashing?
Perfect	V-ing perfect
shouldn't I have clashed? shouldn't you have clashed? shouldn't he have clashed? shouldn't we have clashed? shouldn't you have clashed? shouldn't they have clashed?	shouldn't I have been clashing? shouldn't you have been clashing? shouldn't he have been clashing? shouldn't we have been clashing? shouldn't you have been clashing? shouldn't they have been clashing?