should crouch
Regular verb: crouch - crouched- crouched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should crouch
you should crouch
she should crouch
we should crouch
you should crouch
they should crouch 	I should be crouching
you should be crouching
she should be crouching
we should be crouching
you should be crouching
they should be crouching	I should have crouched
you should have crouched
she should have crouched
we should have crouched
you should have crouched
they should have crouched	I should have been crouching
you should have been crouching
she should have been crouching
we should have been crouching
you should have been crouching
they should have been crouching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not crouch
you should not crouch
she should not crouch
we should not crouch
you should not crouch
they should not crouch 	I should not be crouching
you should not be crouching
she should not be crouching
we should not be crouching
you should not be crouching
they should not be crouching	I should not have crouched
you should not have crouched
she should not have crouched
we should not have crouched
you should not have crouched
they should not have crouched	I should not have been crouching
you should not have been crouching
she should not have been crouching
we should not have been crouching
you should not have been crouching
they should not have been crouching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I crouch?
should you crouch?
should she crouch?
should we crouch?
should you crouch?
should they crouch? 	should I be crouching?
should you be crouching?
should she be crouching?
should we be crouching?
should you be crouching?
should they be crouching? 	should I have crouched?
should you have crouched?
should she have crouched?
should we have crouched?
should you have crouched?
should they have crouched? 	should I have been crouching?
should you have been crouching?
should she have been crouching?
should we have been crouching?
should you have been crouching?
should they have been crouching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not crouch?
should you not crouch?
should she not crouch?
should we not crouch?
should you not crouch?
should they not crouch? 	should I not be crouching?
should you not be crouching?
should she not be crouching?
should we not be crouching?
should you not be crouching?
should they not be crouching? 	should I not have crouched?
should you not have crouched?
should she not have crouched?
should we not have crouched?
should you not have crouched?
should they not have crouched? 	should I not have been crouching?
should you not have been crouching?
should she not have been crouching?
should we not have been crouching?
should you not have been crouching?
should they not have been crouching?