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