could metal
Regular verb: metal - metalled- metalled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could metal
you could metal
she could metal
we could metal
you could metal
they could metal 	I could be metalling
you could be metalling
she could be metalling
we could be metalling
you could be metalling
they could be metalling	I could have metalled
you could have metalled
she could have metalled
we could have metalled
you could have metalled
they could have metalled	I could have been metalling
you could have been metalling
she could have been metalling
we could have been metalling
you could have been metalling
they could have been metalling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't metal
you couldn't metal
she couldn't metal
we couldn't metal
you couldn't metal
they couldn't metal 	I couldn't be metalling
you couldn't be metalling
she couldn't be metalling
we couldn't be metalling
you couldn't be metalling
they couldn't be metalling	I couldn't have metalled
you couldn't have metalled
she couldn't have metalled
we couldn't have metalled
you couldn't have metalled
they couldn't have metalled	I couldn't have been metalling
you couldn't have been metalling
she couldn't have been metalling
we couldn't have been metalling
you couldn't have been metalling
they couldn't have been metalling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I metal?
could you metal?
could she metal?
could we metal?
could you metal?
could they metal? 	could I be metalling?
could you be metalling?
could she be metalling?
could we be metalling?
could you be metalling?
could they be metalling? 	could I have metalled?
could you have metalled?
could she have metalled?
could we have metalled?
could you have metalled?
could they have metalled? 	could I have been metalling?
could you have been metalling?
could she have been metalling?
could we have been metalling?
could you have been metalling?
could they have been metalling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I metal?
couldn't you metal?
couldn't she metal?
couldn't we metal?
couldn't you metal?
couldn't they metal? 	couldn't I be metalling?
couldn't you be metalling?
couldn't she be metalling?
couldn't we be metalling?
couldn't you be metalling?
couldn't they be metalling? 	couldn't I have metalled?
couldn't you have metalled?
couldn't she have metalled?
couldn't we have metalled?
couldn't you have metalled?
couldn't they have metalled? 	couldn't I have been metalling?
couldn't you have been metalling?
couldn't she have been metalling?
couldn't we have been metalling?
couldn't you have been metalling?
couldn't they have been metalling?