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