could pine
Regular verb: pine - pined- pined

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could pine
you could pine
she could pine
we could pine
you could pine
they could pine 	I could be pining
you could be pining
she could be pining
we could be pining
you could be pining
they could be pining	I could have pined
you could have pined
she could have pined
we could have pined
you could have pined
they could have pined	I could have been pining
you could have been pining
she could have been pining
we could have been pining
you could have been pining
they could have been pining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't pine
you couldn't pine
she couldn't pine
we couldn't pine
you couldn't pine
they couldn't pine 	I couldn't be pining
you couldn't be pining
she couldn't be pining
we couldn't be pining
you couldn't be pining
they couldn't be pining	I couldn't have pined
you couldn't have pined
she couldn't have pined
we couldn't have pined
you couldn't have pined
they couldn't have pined	I couldn't have been pining
you couldn't have been pining
she couldn't have been pining
we couldn't have been pining
you couldn't have been pining
they couldn't have been pining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I pine?
could you pine?
could she pine?
could we pine?
could you pine?
could they pine? 	could I be pining?
could you be pining?
could she be pining?
could we be pining?
could you be pining?
could they be pining? 	could I have pined?
could you have pined?
could she have pined?
could we have pined?
could you have pined?
could they have pined? 	could I have been pining?
could you have been pining?
could she have been pining?
could we have been pining?
could you have been pining?
could they have been pining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I pine?
couldn't you pine?
couldn't she pine?
couldn't we pine?
couldn't you pine?
couldn't they pine? 	couldn't I be pining?
couldn't you be pining?
couldn't she be pining?
couldn't we be pining?
couldn't you be pining?
couldn't they be pining? 	couldn't I have pined?
couldn't you have pined?
couldn't she have pined?
couldn't we have pined?
couldn't you have pined?
couldn't they have pined? 	couldn't I have been pining?
couldn't you have been pining?
couldn't she have been pining?
couldn't we have been pining?
couldn't you have been pining?
couldn't they have been pining?