I could labialise you could labialise he could labialise we could labialise you could labialise they could labialise
V-ing form
I could be labialising you could be labialising he could be labialising we could be labialising you could be labialising they could be labialising
Perfect
I could have labialised you could have labialised he could have labialised we could have labialised you could have labialised they could have labialised
V-ing perfect
I could have been labialising you could have been labialising he could have been labialising we could have been labialising you could have been labialising they could have been labialising
Negation
Simple form
I could not labialise you could not labialise he could not labialise we could not labialise you could not labialise they could not labialise
V-ing form
I could not be labialising you could not be labialising he could not be labialising we could not be labialising you could not be labialising they could not be labialising
Perfect
I could not have labialised you could not have labialised he could not have labialised we could not have labialised you could not have labialised they could not have labialised
V-ing perfect
I could not have been labialising you could not have been labialising he could not have been labialising we could not have been labialising you could not have been labialising they could not have been labialising
Interrogative form
Simple form
could I labialise? could you labialise? could he labialise? could we labialise? could you labialise? could they labialise?
V-ing form
could I be labialising? could you be labialising? could he be labialising? could we be labialising? could you be labialising? could they be labialising?
Perfect
could I have labialised? could you have labialised? could he have labialised? could we have labialised? could you have labialised? could they have labialised?
V-ing perfect
could I have been labialising? could you have been labialising? could he have been labialising? could we have been labialising? could you have been labialising? could they have been labialising?
Interro-negative form
Simple form
could I not labialise? could you not labialise? could he not labialise? could we not labialise? could you not labialise? could they not labialise?
V-ing form
could I not be labialising? could you not be labialising? could he not be labialising? could we not be labialising? could you not be labialising? could they not be labialising?
Perfect
could I not have labialised? could you not have labialised? could he not have labialised? could we not have labialised? could you not have labialised? could they not have labialised?
V-ing perfect
could I not have been labialising? could you not have been labialising? could he not have been labialising? could we not have been labialising? could you not have been labialising? could they not have been labialising?