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