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