English verb conjugation
SHOULD RUIN

Regular verb: ruin - ruined - ruined

Affirmation

Simple form	V-ing form
I'd ruin you'd ruin he'd ruin we'd ruin you'd ruin they'd ruin	I'd be ruining you'd be ruining he'd be ruining we'd be ruining you'd be ruining they'd be ruining
Perfect	V-ing perfect
I should've ruined you should've ruined he should've ruined we should've ruined you should've ruined they should've ruined	I should've been ruining you should've been ruining he should've been ruining we should've been ruining you should've been ruining they should've been ruining

Negation

Simple form	V-ing form
I shouldn't ruin you shouldn't ruin he shouldn't ruin we shouldn't ruin you shouldn't ruin they shouldn't ruin	I shouldn't be ruining you shouldn't be ruining he shouldn't be ruining we shouldn't be ruining you shouldn't be ruining they shouldn't be ruining
Perfect	V-ing perfect
I shouldn't have ruined you shouldn't have ruined he shouldn't have ruined we shouldn't have ruined you shouldn't have ruined they shouldn't have ruined	I shouldn't have been ruining you shouldn't have been ruining he shouldn't have been ruining we shouldn't have been ruining you shouldn't have been ruining they shouldn't have been ruining

Interrogative form

Simple form	V-ing form
should I ruin? should you ruin? should he ruin? should we ruin? should you ruin? should they ruin?	should I be ruining? should you be ruining? should he be ruining? should we be ruining? should you be ruining? should they be ruining?
Perfect	V-ing perfect
should I have ruined? should you have ruined? should he have ruined? should we have ruined? should you have ruined? should they have ruined?	should I have been ruining? should you have been ruining? should he have been ruining? should we have been ruining? should you have been ruining? should they have been ruining?

Interro-negative form

Simple form	V-ing form
shouldn't I ruin? shouldn't you ruin? shouldn't he ruin? shouldn't we ruin? shouldn't you ruin? shouldn't they ruin?	shouldn't I be ruining? shouldn't you be ruining? shouldn't he be ruining? shouldn't we be ruining? shouldn't you be ruining? shouldn't they be ruining?
Perfect	V-ing perfect
shouldn't I have ruined? shouldn't you have ruined? shouldn't he have ruined? shouldn't we have ruined? shouldn't you have ruined? shouldn't they have ruined?	shouldn't I have been ruining? shouldn't you have been ruining? shouldn't he have been ruining? shouldn't we have been ruining? shouldn't you have been ruining? shouldn't they have been ruining?