I could bituminise you could bituminise he could bituminise we could bituminise you could bituminise they could bituminise
V-ing form
I could be bituminising you could be bituminising he could be bituminising we could be bituminising you could be bituminising they could be bituminising
Perfect
I could have bituminised you could have bituminised he could have bituminised we could have bituminised you could have bituminised they could have bituminised
V-ing perfect
I could have been bituminising you could have been bituminising he could have been bituminising we could have been bituminising you could have been bituminising they could have been bituminising
Negation
Simple form
I could not bituminise you could not bituminise he could not bituminise we could not bituminise you could not bituminise they could not bituminise
V-ing form
I could not be bituminising you could not be bituminising he could not be bituminising we could not be bituminising you could not be bituminising they could not be bituminising
Perfect
I could not have bituminised you could not have bituminised he could not have bituminised we could not have bituminised you could not have bituminised they could not have bituminised
V-ing perfect
I could not have been bituminising you could not have been bituminising he could not have been bituminising we could not have been bituminising you could not have been bituminising they could not have been bituminising
Interrogative form
Simple form
could I bituminise? could you bituminise? could he bituminise? could we bituminise? could you bituminise? could they bituminise?
V-ing form
could I be bituminising? could you be bituminising? could he be bituminising? could we be bituminising? could you be bituminising? could they be bituminising?
Perfect
could I have bituminised? could you have bituminised? could he have bituminised? could we have bituminised? could you have bituminised? could they have bituminised?
V-ing perfect
could I have been bituminising? could you have been bituminising? could he have been bituminising? could we have been bituminising? could you have been bituminising? could they have been bituminising?
Interro-negative form
Simple form
could I not bituminise? could you not bituminise? could he not bituminise? could we not bituminise? could you not bituminise? could they not bituminise?
V-ing form
could I not be bituminising? could you not be bituminising? could he not be bituminising? could we not be bituminising? could you not be bituminising? could they not be bituminising?
Perfect
could I not have bituminised? could you not have bituminised? could he not have bituminised? could we not have bituminised? could you not have bituminised? could they not have bituminised?
V-ing perfect
could I not have been bituminising? could you not have been bituminising? could he not have been bituminising? could we not have been bituminising? could you not have been bituminising? could they not have been bituminising?