should prepare
Regular verb: prepare - prepared- prepared

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd prepare
you'd prepare
she'd prepare
we'd prepare
you'd prepare
they'd prepare 	I'd be preparing
you'd be preparing
she'd be preparing
we'd be preparing
you'd be preparing
they'd be preparing	I should've prepared
you should've prepared
she should've prepared
we should've prepared
you should've prepared
they should've prepared	I should've been preparing
you should've been preparing
she should've been preparing
we should've been preparing
you should've been preparing
they should've been preparing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't prepare
you shouldn't prepare
she shouldn't prepare
we shouldn't prepare
you shouldn't prepare
they shouldn't prepare 	I shouldn't be preparing
you shouldn't be preparing
she shouldn't be preparing
we shouldn't be preparing
you shouldn't be preparing
they shouldn't be preparing	I shouldn't have prepared
you shouldn't have prepared
she shouldn't have prepared
we shouldn't have prepared
you shouldn't have prepared
they shouldn't have prepared	I shouldn't have been preparing
you shouldn't have been preparing
she shouldn't have been preparing
we shouldn't have been preparing
you shouldn't have been preparing
they shouldn't have been preparing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I prepare?
should you prepare?
should she prepare?
should we prepare?
should you prepare?
should they prepare? 	should I be preparing?
should you be preparing?
should she be preparing?
should we be preparing?
should you be preparing?
should they be preparing? 	should I have prepared?
should you have prepared?
should she have prepared?
should we have prepared?
should you have prepared?
should they have prepared? 	should I have been preparing?
should you have been preparing?
should she have been preparing?
should we have been preparing?
should you have been preparing?
should they have been preparing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I prepare?
shouldn't you prepare?
shouldn't she prepare?
shouldn't we prepare?
shouldn't you prepare?
shouldn't they prepare? 	shouldn't I be preparing?
shouldn't you be preparing?
shouldn't she be preparing?
shouldn't we be preparing?
shouldn't you be preparing?
shouldn't they be preparing? 	shouldn't I have prepared?
shouldn't you have prepared?
shouldn't she have prepared?
shouldn't we have prepared?
shouldn't you have prepared?
shouldn't they have prepared? 	shouldn't I have been preparing?
shouldn't you have been preparing?
shouldn't she have been preparing?
shouldn't we have been preparing?
shouldn't you have been preparing?
shouldn't they have been preparing?