I could synopsise you could synopsise he could synopsise we could synopsise you could synopsise they could synopsise
V-ing form
I could be synopsising you could be synopsising he could be synopsising we could be synopsising you could be synopsising they could be synopsising
Perfect
I could have synopsised you could have synopsised he could have synopsised we could have synopsised you could have synopsised they could have synopsised
V-ing perfect
I could have been synopsising you could have been synopsising he could have been synopsising we could have been synopsising you could have been synopsising they could have been synopsising
Negation
Simple form
I couldn't synopsise you couldn't synopsise he couldn't synopsise we couldn't synopsise you couldn't synopsise they couldn't synopsise
V-ing form
I couldn't be synopsising you couldn't be synopsising he couldn't be synopsising we couldn't be synopsising you couldn't be synopsising they couldn't be synopsising
Perfect
I couldn't have synopsised you couldn't have synopsised he couldn't have synopsised we couldn't have synopsised you couldn't have synopsised they couldn't have synopsised
V-ing perfect
I couldn't have been synopsising you couldn't have been synopsising he couldn't have been synopsising we couldn't have been synopsising you couldn't have been synopsising they couldn't have been synopsising
Interrogative form
Simple form
could I synopsise? could you synopsise? could he synopsise? could we synopsise? could you synopsise? could they synopsise?
V-ing form
could I be synopsising? could you be synopsising? could he be synopsising? could we be synopsising? could you be synopsising? could they be synopsising?
Perfect
could I have synopsised? could you have synopsised? could he have synopsised? could we have synopsised? could you have synopsised? could they have synopsised?
V-ing perfect
could I have been synopsising? could you have been synopsising? could he have been synopsising? could we have been synopsising? could you have been synopsising? could they have been synopsising?
Interro-negative form
Simple form
couldn't I synopsise? couldn't you synopsise? couldn't he synopsise? couldn't we synopsise? couldn't you synopsise? couldn't they synopsise?
V-ing form
couldn't I be synopsising? couldn't you be synopsising? couldn't he be synopsising? couldn't we be synopsising? couldn't you be synopsising? couldn't they be synopsising?
Perfect
couldn't I have synopsised? couldn't you have synopsised? couldn't he have synopsised? couldn't we have synopsised? couldn't you have synopsised? couldn't they have synopsised?
V-ing perfect
couldn't I have been synopsising? couldn't you have been synopsising? couldn't he have been synopsising? couldn't we have been synopsising? couldn't you have been synopsising? couldn't they have been synopsising?