must swig
Regular verb: swig - swigged- swigged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must swig
you must swig
she must swig
we must swig
you must swig
they must swig 	I must be swigging
you must be swigging
she must be swigging
we must be swigging
you must be swigging
they must be swigging	I must have swigged
you must have swigged
she must have swigged
we must have swigged
you must have swigged
they must have swigged	I must have been swigging
you must have been swigging
she must have been swigging
we must have been swigging
you must have been swigging
they must have been swigging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not swig
you must not swig
she must not swig
we must not swig
you must not swig
they must not swig 	I must not be swigging
you must not be swigging
she must not be swigging
we must not be swigging
you must not be swigging
they must not be swigging	I must not have swigged
you must not have swigged
she must not have swigged
we must not have swigged
you must not have swigged
they must not have swigged	I must not have been swigging
you must not have been swigging
she must not have been swigging
we must not have been swigging
you must not have been swigging
they must not have been swigging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I swig?
must you swig?
must she swig?
must we swig?
must you swig?
must they swig? 	must I be swigging?
must you be swigging?
must she be swigging?
must we be swigging?
must you be swigging?
must they be swigging? 	must I have swigged?
must you have swigged?
must she have swigged?
must we have swigged?
must you have swigged?
must they have swigged? 	must I have been swigging?
must you have been swigging?
must she have been swigging?
must we have been swigging?
must you have been swigging?
must they have been swigging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not swig?
must you not swig?
must she not swig?
must we not swig?
must you not swig?
must they not swig? 	must I not be swigging?
must you not be swigging?
must she not be swigging?
must we not be swigging?
must you not be swigging?
must they not be swigging? 	must I not have swigged?
must you not have swigged?
must she not have swigged?
must we not have swigged?
must you not have swigged?
must they not have swigged? 	must I not have been swigging?
must you not have been swigging?
must she not have been swigging?
must we not have been swigging?
must you not have been swigging?
must they not have been swigging?