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