I could rabble you could rabble she could rabble we could rabble you could rabble they could rabble
V-ing form
I could be rabbling you could be rabbling she could be rabbling we could be rabbling you could be rabbling they could be rabbling
Perfect
I could have rabbled you could have rabbled she could have rabbled we could have rabbled you could have rabbled they could have rabbled
V-ing perfect
I could have been rabbling you could have been rabbling she could have been rabbling we could have been rabbling you could have been rabbling they could have been rabbling
Negation
Simple form
I couldn't rabble you couldn't rabble she couldn't rabble we couldn't rabble you couldn't rabble they couldn't rabble
V-ing form
I couldn't be rabbling you couldn't be rabbling she couldn't be rabbling we couldn't be rabbling you couldn't be rabbling they couldn't be rabbling
Perfect
I couldn't have rabbled you couldn't have rabbled she couldn't have rabbled we couldn't have rabbled you couldn't have rabbled they couldn't have rabbled
V-ing perfect
I couldn't have been rabbling you couldn't have been rabbling she couldn't have been rabbling we couldn't have been rabbling you couldn't have been rabbling they couldn't have been rabbling
Interrogative form
Simple form
could I rabble? could you rabble? could she rabble? could we rabble? could you rabble? could they rabble?
V-ing form
could I be rabbling? could you be rabbling? could she be rabbling? could we be rabbling? could you be rabbling? could they be rabbling?
Perfect
could I have rabbled? could you have rabbled? could she have rabbled? could we have rabbled? could you have rabbled? could they have rabbled?
V-ing perfect
could I have been rabbling? could you have been rabbling? could she have been rabbling? could we have been rabbling? could you have been rabbling? could they have been rabbling?
Interro-negative form
Simple form
couldn't I rabble? couldn't you rabble? couldn't she rabble? couldn't we rabble? couldn't you rabble? couldn't they rabble?
V-ing form
couldn't I be rabbling? couldn't you be rabbling? couldn't she be rabbling? couldn't we be rabbling? couldn't you be rabbling? couldn't they be rabbling?
Perfect
couldn't I have rabbled? couldn't you have rabbled? couldn't she have rabbled? couldn't we have rabbled? couldn't you have rabbled? couldn't they have rabbled?
V-ing perfect
couldn't I have been rabbling? couldn't you have been rabbling? couldn't she have been rabbling? couldn't we have been rabbling? couldn't you have been rabbling? couldn't they have been rabbling?