English verb conjugation
COULD COUCH

Regular verb: couch - couched - couched

Affirmation

Simple form	V-ing form
I could couch you could couch she could couch we could couch you could couch they could couch	I could be couching you could be couching she could be couching we could be couching you could be couching they could be couching
Perfect	V-ing perfect
I could have couched you could have couched she could have couched we could have couched you could have couched they could have couched	I could have been couching you could have been couching she could have been couching we could have been couching you could have been couching they could have been couching

Negation

Simple form	V-ing form
I couldn't couch you couldn't couch she couldn't couch we couldn't couch you couldn't couch they couldn't couch	I couldn't be couching you couldn't be couching she couldn't be couching we couldn't be couching you couldn't be couching they couldn't be couching
Perfect	V-ing perfect
I couldn't have couched you couldn't have couched she couldn't have couched we couldn't have couched you couldn't have couched they couldn't have couched	I couldn't have been couching you couldn't have been couching she couldn't have been couching we couldn't have been couching you couldn't have been couching they couldn't have been couching

Interrogative form

Simple form	V-ing form
could I couch? could you couch? could she couch? could we couch? could you couch? could they couch?	could I be couching? could you be couching? could she be couching? could we be couching? could you be couching? could they be couching?
Perfect	V-ing perfect
could I have couched? could you have couched? could she have couched? could we have couched? could you have couched? could they have couched?	could I have been couching? could you have been couching? could she have been couching? could we have been couching? could you have been couching? could they have been couching?

Interro-negative form

Simple form	V-ing form
couldn't I couch? couldn't you couch? couldn't she couch? couldn't we couch? couldn't you couch? couldn't they couch?	couldn't I be couching? couldn't you be couching? couldn't she be couching? couldn't we be couching? couldn't you be couching? couldn't they be couching?
Perfect	V-ing perfect
couldn't I have couched? couldn't you have couched? couldn't she have couched? couldn't we have couched? couldn't you have couched? couldn't they have couched?	couldn't I have been couching? couldn't you have been couching? couldn't she have been couching? couldn't we have been couching? couldn't you have been couching? couldn't they have been couching?