could quote
Regular verb: quote - quoted- quoted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could quote
you could quote
he could quote
we could quote
you could quote
they could quote 	I could be quoting
you could be quoting
he could be quoting
we could be quoting
you could be quoting
they could be quoting	I could have quoted
you could have quoted
he could have quoted
we could have quoted
you could have quoted
they could have quoted	I could have been quoting
you could have been quoting
he could have been quoting
we could have been quoting
you could have been quoting
they could have been quoting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't quote
you couldn't quote
he couldn't quote
we couldn't quote
you couldn't quote
they couldn't quote 	I couldn't be quoting
you couldn't be quoting
he couldn't be quoting
we couldn't be quoting
you couldn't be quoting
they couldn't be quoting	I couldn't have quoted
you couldn't have quoted
he couldn't have quoted
we couldn't have quoted
you couldn't have quoted
they couldn't have quoted	I couldn't have been quoting
you couldn't have been quoting
he couldn't have been quoting
we couldn't have been quoting
you couldn't have been quoting
they couldn't have been quoting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I quote?
could you quote?
could he quote?
could we quote?
could you quote?
could they quote? 	could I be quoting?
could you be quoting?
could he be quoting?
could we be quoting?
could you be quoting?
could they be quoting? 	could I have quoted?
could you have quoted?
could he have quoted?
could we have quoted?
could you have quoted?
could they have quoted? 	could I have been quoting?
could you have been quoting?
could he have been quoting?
could we have been quoting?
could you have been quoting?
could they have been quoting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I quote?
couldn't you quote?
couldn't he quote?
couldn't we quote?
couldn't you quote?
couldn't they quote? 	couldn't I be quoting?
couldn't you be quoting?
couldn't he be quoting?
couldn't we be quoting?
couldn't you be quoting?
couldn't they be quoting? 	couldn't I have quoted?
couldn't you have quoted?
couldn't he have quoted?
couldn't we have quoted?
couldn't you have quoted?
couldn't they have quoted? 	couldn't I have been quoting?
couldn't you have been quoting?
couldn't he have been quoting?
couldn't we have been quoting?
couldn't you have been quoting?
couldn't they have been quoting?