could snake
Regular verb: snake - snaked- snaked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could snake
you could snake
she could snake
we could snake
you could snake
they could snake 	I could be snaking
you could be snaking
she could be snaking
we could be snaking
you could be snaking
they could be snaking	I could have snaked
you could have snaked
she could have snaked
we could have snaked
you could have snaked
they could have snaked	I could have been snaking
you could have been snaking
she could have been snaking
we could have been snaking
you could have been snaking
they could have been snaking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't snake
you couldn't snake
she couldn't snake
we couldn't snake
you couldn't snake
they couldn't snake 	I couldn't be snaking
you couldn't be snaking
she couldn't be snaking
we couldn't be snaking
you couldn't be snaking
they couldn't be snaking	I couldn't have snaked
you couldn't have snaked
she couldn't have snaked
we couldn't have snaked
you couldn't have snaked
they couldn't have snaked	I couldn't have been snaking
you couldn't have been snaking
she couldn't have been snaking
we couldn't have been snaking
you couldn't have been snaking
they couldn't have been snaking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I snake?
could you snake?
could she snake?
could we snake?
could you snake?
could they snake? 	could I be snaking?
could you be snaking?
could she be snaking?
could we be snaking?
could you be snaking?
could they be snaking? 	could I have snaked?
could you have snaked?
could she have snaked?
could we have snaked?
could you have snaked?
could they have snaked? 	could I have been snaking?
could you have been snaking?
could she have been snaking?
could we have been snaking?
could you have been snaking?
could they have been snaking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I snake?
couldn't you snake?
couldn't she snake?
couldn't we snake?
couldn't you snake?
couldn't they snake? 	couldn't I be snaking?
couldn't you be snaking?
couldn't she be snaking?
couldn't we be snaking?
couldn't you be snaking?
couldn't they be snaking? 	couldn't I have snaked?
couldn't you have snaked?
couldn't she have snaked?
couldn't we have snaked?
couldn't you have snaked?
couldn't they have snaked? 	couldn't I have been snaking?
couldn't you have been snaking?
couldn't she have been snaking?
couldn't we have been snaking?
couldn't you have been snaking?
couldn't they have been snaking?