could sling
Irregular verb: sling - slung- slung

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could sling
you could sling
she could sling
we could sling
you could sling
they could sling 	I could be slinging
you could be slinging
she could be slinging
we could be slinging
you could be slinging
they could be slinging	I could have slung
you could have slung
she could have slung
we could have slung
you could have slung
they could have slung	I could have been slinging
you could have been slinging
she could have been slinging
we could have been slinging
you could have been slinging
they could have been slinging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't sling
you couldn't sling
she couldn't sling
we couldn't sling
you couldn't sling
they couldn't sling 	I couldn't be slinging
you couldn't be slinging
she couldn't be slinging
we couldn't be slinging
you couldn't be slinging
they couldn't be slinging	I couldn't have slung
you couldn't have slung
she couldn't have slung
we couldn't have slung
you couldn't have slung
they couldn't have slung	I couldn't have been slinging
you couldn't have been slinging
she couldn't have been slinging
we couldn't have been slinging
you couldn't have been slinging
they couldn't have been slinging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I sling?
could you sling?
could she sling?
could we sling?
could you sling?
could they sling? 	could I be slinging?
could you be slinging?
could she be slinging?
could we be slinging?
could you be slinging?
could they be slinging? 	could I have slung?
could you have slung?
could she have slung?
could we have slung?
could you have slung?
could they have slung? 	could I have been slinging?
could you have been slinging?
could she have been slinging?
could we have been slinging?
could you have been slinging?
could they have been slinging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I sling?
couldn't you sling?
couldn't she sling?
couldn't we sling?
couldn't you sling?
couldn't they sling? 	couldn't I be slinging?
couldn't you be slinging?
couldn't she be slinging?
couldn't we be slinging?
couldn't you be slinging?
couldn't they be slinging? 	couldn't I have slung?
couldn't you have slung?
couldn't she have slung?
couldn't we have slung?
couldn't you have slung?
couldn't they have slung? 	couldn't I have been slinging?
couldn't you have been slinging?
couldn't she have been slinging?
couldn't we have been slinging?
couldn't you have been slinging?
couldn't they have been slinging?