English verb conjugation
COULD QUOTE

Regular verb: quote - quoted - quoted

Affirmation

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