could slide
Irregular verb: slide - slid- slid

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could slide
you could slide
she could slide
we could slide
you could slide
they could slide 	I could be sliding
you could be sliding
she could be sliding
we could be sliding
you could be sliding
they could be sliding	I could have slid
you could have slid
she could have slid
we could have slid
you could have slid
they could have slid	I could have been sliding
you could have been sliding
she could have been sliding
we could have been sliding
you could have been sliding
they could have been sliding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't slide
you couldn't slide
she couldn't slide
we couldn't slide
you couldn't slide
they couldn't slide 	I couldn't be sliding
you couldn't be sliding
she couldn't be sliding
we couldn't be sliding
you couldn't be sliding
they couldn't be sliding	I couldn't have slid
you couldn't have slid
she couldn't have slid
we couldn't have slid
you couldn't have slid
they couldn't have slid	I couldn't have been sliding
you couldn't have been sliding
she couldn't have been sliding
we couldn't have been sliding
you couldn't have been sliding
they couldn't have been sliding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I slide?
could you slide?
could she slide?
could we slide?
could you slide?
could they slide? 	could I be sliding?
could you be sliding?
could she be sliding?
could we be sliding?
could you be sliding?
could they be sliding? 	could I have slid?
could you have slid?
could she have slid?
could we have slid?
could you have slid?
could they have slid? 	could I have been sliding?
could you have been sliding?
could she have been sliding?
could we have been sliding?
could you have been sliding?
could they have been sliding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I slide?
couldn't you slide?
couldn't she slide?
couldn't we slide?
couldn't you slide?
couldn't they slide? 	couldn't I be sliding?
couldn't you be sliding?
couldn't she be sliding?
couldn't we be sliding?
couldn't you be sliding?
couldn't they be sliding? 	couldn't I have slid?
couldn't you have slid?
couldn't she have slid?
couldn't we have slid?
couldn't you have slid?
couldn't they have slid? 	couldn't I have been sliding?
couldn't you have been sliding?
couldn't she have been sliding?
couldn't we have been sliding?
couldn't you have been sliding?
couldn't they have been sliding?