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