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