I could bastardise you could bastardise she could bastardise we could bastardise you could bastardise they could bastardise
V-ing form
I could be bastardising you could be bastardising she could be bastardising we could be bastardising you could be bastardising they could be bastardising
Perfect
I could have bastardised you could have bastardised she could have bastardised we could have bastardised you could have bastardised they could have bastardised
V-ing perfect
I could have been bastardising you could have been bastardising she could have been bastardising we could have been bastardising you could have been bastardising they could have been bastardising
Negation
Simple form
I couldn't bastardise you couldn't bastardise she couldn't bastardise we couldn't bastardise you couldn't bastardise they couldn't bastardise
V-ing form
I couldn't be bastardising you couldn't be bastardising she couldn't be bastardising we couldn't be bastardising you couldn't be bastardising they couldn't be bastardising
Perfect
I couldn't have bastardised you couldn't have bastardised she couldn't have bastardised we couldn't have bastardised you couldn't have bastardised they couldn't have bastardised
V-ing perfect
I couldn't have been bastardising you couldn't have been bastardising she couldn't have been bastardising we couldn't have been bastardising you couldn't have been bastardising they couldn't have been bastardising
Interrogative form
Simple form
could I bastardise? could you bastardise? could she bastardise? could we bastardise? could you bastardise? could they bastardise?
V-ing form
could I be bastardising? could you be bastardising? could she be bastardising? could we be bastardising? could you be bastardising? could they be bastardising?
Perfect
could I have bastardised? could you have bastardised? could she have bastardised? could we have bastardised? could you have bastardised? could they have bastardised?
V-ing perfect
could I have been bastardising? could you have been bastardising? could she have been bastardising? could we have been bastardising? could you have been bastardising? could they have been bastardising?
Interro-negative form
Simple form
couldn't I bastardise? couldn't you bastardise? couldn't she bastardise? couldn't we bastardise? couldn't you bastardise? couldn't they bastardise?
V-ing form
couldn't I be bastardising? couldn't you be bastardising? couldn't she be bastardising? couldn't we be bastardising? couldn't you be bastardising? couldn't they be bastardising?
Perfect
couldn't I have bastardised? couldn't you have bastardised? couldn't she have bastardised? couldn't we have bastardised? couldn't you have bastardised? couldn't they have bastardised?
V-ing perfect
couldn't I have been bastardising? couldn't you have been bastardising? couldn't she have been bastardising? couldn't we have been bastardising? couldn't you have been bastardising? couldn't they have been bastardising?