should tomb
Regular verb: tomb - tombed- tombed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd tomb
you'd tomb
she'd tomb
we'd tomb
you'd tomb
they'd tomb 	I'd be tombing
you'd be tombing
she'd be tombing
we'd be tombing
you'd be tombing
they'd be tombing	I should've tombed
you should've tombed
she should've tombed
we should've tombed
you should've tombed
they should've tombed	I should've been tombing
you should've been tombing
she should've been tombing
we should've been tombing
you should've been tombing
they should've been tombing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't tomb
you shouldn't tomb
she shouldn't tomb
we shouldn't tomb
you shouldn't tomb
they shouldn't tomb 	I shouldn't be tombing
you shouldn't be tombing
she shouldn't be tombing
we shouldn't be tombing
you shouldn't be tombing
they shouldn't be tombing	I shouldn't have tombed
you shouldn't have tombed
she shouldn't have tombed
we shouldn't have tombed
you shouldn't have tombed
they shouldn't have tombed	I shouldn't have been tombing
you shouldn't have been tombing
she shouldn't have been tombing
we shouldn't have been tombing
you shouldn't have been tombing
they shouldn't have been tombing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I tomb?
should you tomb?
should she tomb?
should we tomb?
should you tomb?
should they tomb? 	should I be tombing?
should you be tombing?
should she be tombing?
should we be tombing?
should you be tombing?
should they be tombing? 	should I have tombed?
should you have tombed?
should she have tombed?
should we have tombed?
should you have tombed?
should they have tombed? 	should I have been tombing?
should you have been tombing?
should she have been tombing?
should we have been tombing?
should you have been tombing?
should they have been tombing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I tomb?
shouldn't you tomb?
shouldn't she tomb?
shouldn't we tomb?
shouldn't you tomb?
shouldn't they tomb? 	shouldn't I be tombing?
shouldn't you be tombing?
shouldn't she be tombing?
shouldn't we be tombing?
shouldn't you be tombing?
shouldn't they be tombing? 	shouldn't I have tombed?
shouldn't you have tombed?
shouldn't she have tombed?
shouldn't we have tombed?
shouldn't you have tombed?
shouldn't they have tombed? 	shouldn't I have been tombing?
shouldn't you have been tombing?
shouldn't she have been tombing?
shouldn't we have been tombing?
shouldn't you have been tombing?
shouldn't they have been tombing?