I could syllogise you could syllogise he could syllogise we could syllogise you could syllogise they could syllogise
V-ing form
I could be syllogising you could be syllogising he could be syllogising we could be syllogising you could be syllogising they could be syllogising
Perfect
I could have syllogised you could have syllogised he could have syllogised we could have syllogised you could have syllogised they could have syllogised
V-ing perfect
I could have been syllogising you could have been syllogising he could have been syllogising we could have been syllogising you could have been syllogising they could have been syllogising
Negation
Simple form
I could not syllogise you could not syllogise he could not syllogise we could not syllogise you could not syllogise they could not syllogise
V-ing form
I could not be syllogising you could not be syllogising he could not be syllogising we could not be syllogising you could not be syllogising they could not be syllogising
Perfect
I could not have syllogised you could not have syllogised he could not have syllogised we could not have syllogised you could not have syllogised they could not have syllogised
V-ing perfect
I could not have been syllogising you could not have been syllogising he could not have been syllogising we could not have been syllogising you could not have been syllogising they could not have been syllogising
Interrogative form
Simple form
could I syllogise? could you syllogise? could he syllogise? could we syllogise? could you syllogise? could they syllogise?
V-ing form
could I be syllogising? could you be syllogising? could he be syllogising? could we be syllogising? could you be syllogising? could they be syllogising?
Perfect
could I have syllogised? could you have syllogised? could he have syllogised? could we have syllogised? could you have syllogised? could they have syllogised?
V-ing perfect
could I have been syllogising? could you have been syllogising? could he have been syllogising? could we have been syllogising? could you have been syllogising? could they have been syllogising?
Interro-negative form
Simple form
could I not syllogise? could you not syllogise? could he not syllogise? could we not syllogise? could you not syllogise? could they not syllogise?
V-ing form
could I not be syllogising? could you not be syllogising? could he not be syllogising? could we not be syllogising? could you not be syllogising? could they not be syllogising?
Perfect
could I not have syllogised? could you not have syllogised? could he not have syllogised? could we not have syllogised? could you not have syllogised? could they not have syllogised?
V-ing perfect
could I not have been syllogising? could you not have been syllogising? could he not have been syllogising? could we not have been syllogising? could you not have been syllogising? could they not have been syllogising?