must tatter
Regular verb: tatter - tattered- tattered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must tatter
you must tatter
he must tatter
we must tatter
you must tatter
they must tatter 	I must be tattering
you must be tattering
he must be tattering
we must be tattering
you must be tattering
they must be tattering	I must have tattered
you must have tattered
he must have tattered
we must have tattered
you must have tattered
they must have tattered	I must have been tattering
you must have been tattering
he must have been tattering
we must have been tattering
you must have been tattering
they must have been tattering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not tatter
you must not tatter
he must not tatter
we must not tatter
you must not tatter
they must not tatter 	I must not be tattering
you must not be tattering
he must not be tattering
we must not be tattering
you must not be tattering
they must not be tattering	I must not have tattered
you must not have tattered
he must not have tattered
we must not have tattered
you must not have tattered
they must not have tattered	I must not have been tattering
you must not have been tattering
he must not have been tattering
we must not have been tattering
you must not have been tattering
they must not have been tattering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I tatter?
must you tatter?
must he tatter?
must we tatter?
must you tatter?
must they tatter? 	must I be tattering?
must you be tattering?
must he be tattering?
must we be tattering?
must you be tattering?
must they be tattering? 	must I have tattered?
must you have tattered?
must he have tattered?
must we have tattered?
must you have tattered?
must they have tattered? 	must I have been tattering?
must you have been tattering?
must he have been tattering?
must we have been tattering?
must you have been tattering?
must they have been tattering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not tatter?
must you not tatter?
must he not tatter?
must we not tatter?
must you not tatter?
must they not tatter? 	must I not be tattering?
must you not be tattering?
must he not be tattering?
must we not be tattering?
must you not be tattering?
must they not be tattering? 	must I not have tattered?
must you not have tattered?
must he not have tattered?
must we not have tattered?
must you not have tattered?
must they not have tattered? 	must I not have been tattering?
must you not have been tattering?
must he not have been tattering?
must we not have been tattering?
must you not have been tattering?
must they not have been tattering?