could swig
Regular verb: swig - swigged- swigged

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't swig
you couldn't swig
she couldn't swig
we couldn't swig
you couldn't swig
they couldn't swig 	I couldn't be swigging
you couldn't be swigging
she couldn't be swigging
we couldn't be swigging
you couldn't be swigging
they couldn't be swigging	I couldn't have swigged
you couldn't have swigged
she couldn't have swigged
we couldn't have swigged
you couldn't have swigged
they couldn't have swigged	I couldn't have been swigging
you couldn't have been swigging
she couldn't have been swigging
we couldn't have been swigging
you couldn't have been swigging
they couldn't have been swigging	

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

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