could skirt
Regular verb: skirt - skirted- skirted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could skirt
you could skirt
he could skirt
we could skirt
you could skirt
they could skirt 	I could be skirting
you could be skirting
he could be skirting
we could be skirting
you could be skirting
they could be skirting	I could have skirted
you could have skirted
he could have skirted
we could have skirted
you could have skirted
they could have skirted	I could have been skirting
you could have been skirting
he could have been skirting
we could have been skirting
you could have been skirting
they could have been skirting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't skirt
you couldn't skirt
he couldn't skirt
we couldn't skirt
you couldn't skirt
they couldn't skirt 	I couldn't be skirting
you couldn't be skirting
he couldn't be skirting
we couldn't be skirting
you couldn't be skirting
they couldn't be skirting	I couldn't have skirted
you couldn't have skirted
he couldn't have skirted
we couldn't have skirted
you couldn't have skirted
they couldn't have skirted	I couldn't have been skirting
you couldn't have been skirting
he couldn't have been skirting
we couldn't have been skirting
you couldn't have been skirting
they couldn't have been skirting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I skirt?
could you skirt?
could he skirt?
could we skirt?
could you skirt?
could they skirt? 	could I be skirting?
could you be skirting?
could he be skirting?
could we be skirting?
could you be skirting?
could they be skirting? 	could I have skirted?
could you have skirted?
could he have skirted?
could we have skirted?
could you have skirted?
could they have skirted? 	could I have been skirting?
could you have been skirting?
could he have been skirting?
could we have been skirting?
could you have been skirting?
could they have been skirting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I skirt?
couldn't you skirt?
couldn't he skirt?
couldn't we skirt?
couldn't you skirt?
couldn't they skirt? 	couldn't I be skirting?
couldn't you be skirting?
couldn't he be skirting?
couldn't we be skirting?
couldn't you be skirting?
couldn't they be skirting? 	couldn't I have skirted?
couldn't you have skirted?
couldn't he have skirted?
couldn't we have skirted?
couldn't you have skirted?
couldn't they have skirted? 	couldn't I have been skirting?
couldn't you have been skirting?
couldn't he have been skirting?
couldn't we have been skirting?
couldn't you have been skirting?
couldn't they have been skirting?