I could flit you could flit she could flit we could flit you could flit they could flit
V-ing form
I could be flitting you could be flitting she could be flitting we could be flitting you could be flitting they could be flitting
Perfect
I could have flitted you could have flitted she could have flitted we could have flitted you could have flitted they could have flitted
V-ing perfect
I could have been flitting you could have been flitting she could have been flitting we could have been flitting you could have been flitting they could have been flitting
Negation
Simple form
I could not flit you could not flit she could not flit we could not flit you could not flit they could not flit
V-ing form
I could not be flitting you could not be flitting she could not be flitting we could not be flitting you could not be flitting they could not be flitting
Perfect
I could not have flitted you could not have flitted she could not have flitted we could not have flitted you could not have flitted they could not have flitted
V-ing perfect
I could not have been flitting you could not have been flitting she could not have been flitting we could not have been flitting you could not have been flitting they could not have been flitting
Interrogative form
Simple form
could I flit? could you flit? could she flit? could we flit? could you flit? could they flit?
V-ing form
could I be flitting? could you be flitting? could she be flitting? could we be flitting? could you be flitting? could they be flitting?
Perfect
could I have flitted? could you have flitted? could she have flitted? could we have flitted? could you have flitted? could they have flitted?
V-ing perfect
could I have been flitting? could you have been flitting? could she have been flitting? could we have been flitting? could you have been flitting? could they have been flitting?
Interro-negative form
Simple form
could I not flit? could you not flit? could she not flit? could we not flit? could you not flit? could they not flit?
V-ing form
could I not be flitting? could you not be flitting? could she not be flitting? could we not be flitting? could you not be flitting? could they not be flitting?
Perfect
could I not have flitted? could you not have flitted? could she not have flitted? could we not have flitted? could you not have flitted? could they not have flitted?
V-ing perfect
could I not have been flitting? could you not have been flitting? could she not have been flitting? could we not have been flitting? could you not have been flitting? could they not have been flitting?