English verb conjugation
COULD FROCK

Regular verb: frock - frocked - frocked

Affirmation

Simple form	V-ing form
I could frock you could frock she could frock we could frock you could frock they could frock	I could be frocking you could be frocking she could be frocking we could be frocking you could be frocking they could be frocking
Perfect	V-ing perfect
I could have frocked you could have frocked she could have frocked we could have frocked you could have frocked they could have frocked	I could have been frocking you could have been frocking she could have been frocking we could have been frocking you could have been frocking they could have been frocking

Negation

Simple form	V-ing form
I couldn't frock you couldn't frock she couldn't frock we couldn't frock you couldn't frock they couldn't frock	I couldn't be frocking you couldn't be frocking she couldn't be frocking we couldn't be frocking you couldn't be frocking they couldn't be frocking
Perfect	V-ing perfect
I couldn't have frocked you couldn't have frocked she couldn't have frocked we couldn't have frocked you couldn't have frocked they couldn't have frocked	I couldn't have been frocking you couldn't have been frocking she couldn't have been frocking we couldn't have been frocking you couldn't have been frocking they couldn't have been frocking

Interrogative form

Simple form	V-ing form
could I frock? could you frock? could she frock? could we frock? could you frock? could they frock?	could I be frocking? could you be frocking? could she be frocking? could we be frocking? could you be frocking? could they be frocking?
Perfect	V-ing perfect
could I have frocked? could you have frocked? could she have frocked? could we have frocked? could you have frocked? could they have frocked?	could I have been frocking? could you have been frocking? could she have been frocking? could we have been frocking? could you have been frocking? could they have been frocking?

Interro-negative form

Simple form	V-ing form
couldn't I frock? couldn't you frock? couldn't she frock? couldn't we frock? couldn't you frock? couldn't they frock?	couldn't I be frocking? couldn't you be frocking? couldn't she be frocking? couldn't we be frocking? couldn't you be frocking? couldn't they be frocking?
Perfect	V-ing perfect
couldn't I have frocked? couldn't you have frocked? couldn't she have frocked? couldn't we have frocked? couldn't you have frocked? couldn't they have frocked?	couldn't I have been frocking? couldn't you have been frocking? couldn't she have been frocking? couldn't we have been frocking? couldn't you have been frocking? couldn't they have been frocking?