must twig
Regular verb: twig - twigged- twigged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must twig
you must twig
she must twig
we must twig
you must twig
they must twig 	I must be twigging
you must be twigging
she must be twigging
we must be twigging
you must be twigging
they must be twigging	I must have twigged
you must have twigged
she must have twigged
we must have twigged
you must have twigged
they must have twigged	I must have been twigging
you must have been twigging
she must have been twigging
we must have been twigging
you must have been twigging
they must have been twigging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not twig
you must not twig
she must not twig
we must not twig
you must not twig
they must not twig 	I must not be twigging
you must not be twigging
she must not be twigging
we must not be twigging
you must not be twigging
they must not be twigging	I must not have twigged
you must not have twigged
she must not have twigged
we must not have twigged
you must not have twigged
they must not have twigged	I must not have been twigging
you must not have been twigging
she must not have been twigging
we must not have been twigging
you must not have been twigging
they must not have been twigging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I twig?
must you twig?
must she twig?
must we twig?
must you twig?
must they twig? 	must I be twigging?
must you be twigging?
must she be twigging?
must we be twigging?
must you be twigging?
must they be twigging? 	must I have twigged?
must you have twigged?
must she have twigged?
must we have twigged?
must you have twigged?
must they have twigged? 	must I have been twigging?
must you have been twigging?
must she have been twigging?
must we have been twigging?
must you have been twigging?
must they have been twigging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not twig?
must you not twig?
must she not twig?
must we not twig?
must you not twig?
must they not twig? 	must I not be twigging?
must you not be twigging?
must she not be twigging?
must we not be twigging?
must you not be twigging?
must they not be twigging? 	must I not have twigged?
must you not have twigged?
must she not have twigged?
must we not have twigged?
must you not have twigged?
must they not have twigged? 	must I not have been twigging?
must you not have been twigging?
must she not have been twigging?
must we not have been twigging?
must you not have been twigging?
must they not have been twigging?