I can cross-fertilise you can cross-fertilise he can cross-fertilise we can cross-fertilise you can cross-fertilise they can cross-fertilise
V-ing form
I can be cross-fertilising you can be cross-fertilising he can be cross-fertilising we can be cross-fertilising you can be cross-fertilising they can be cross-fertilising
Perfect
I can have cross-fertilised you can have cross-fertilised he can have cross-fertilised we can have cross-fertilised you can have cross-fertilised they can have cross-fertilised
V-ing perfect
I can have been cross-fertilising you can have been cross-fertilising he can have been cross-fertilising we can have been cross-fertilising you can have been cross-fertilising they can have been cross-fertilising
Negation
Simple form
I cannot cross-fertilise you cannot cross-fertilise he cannot cross-fertilise we cannot cross-fertilise you cannot cross-fertilise they cannot cross-fertilise
V-ing form
I cannot be cross-fertilising you cannot be cross-fertilising he cannot be cross-fertilising we cannot be cross-fertilising you cannot be cross-fertilising they cannot be cross-fertilising
Perfect
I cannot have cross-fertilised you cannot have cross-fertilised he cannot have cross-fertilised we cannot have cross-fertilised you cannot have cross-fertilised they cannot have cross-fertilised
V-ing perfect
I cannot have been cross-fertilising you cannot have been cross-fertilising he cannot have been cross-fertilising we cannot have been cross-fertilising you cannot have been cross-fertilising they cannot have been cross-fertilising
Interrogative form
Simple form
can I cross-fertilise? can you cross-fertilise? can he cross-fertilise? can we cross-fertilise? can you cross-fertilise? can they cross-fertilise?
V-ing form
can I be cross-fertilising? can you be cross-fertilising? can he be cross-fertilising? can we be cross-fertilising? can you be cross-fertilising? can they be cross-fertilising?
Perfect
can I have cross-fertilised? can you have cross-fertilised? can he have cross-fertilised? can we have cross-fertilised? can you have cross-fertilised? can they have cross-fertilised?
V-ing perfect
can I have been cross-fertilising? can you have been cross-fertilising? can he have been cross-fertilising? can we have been cross-fertilising? can you have been cross-fertilising? can they have been cross-fertilising?
Interro-negative form
Simple form
can I not cross-fertilise? can you not cross-fertilise? can he not cross-fertilise? can we not cross-fertilise? can you not cross-fertilise? can they not cross-fertilise?
V-ing form
can I not be cross-fertilising? can you not be cross-fertilising? can he not be cross-fertilising? can we not be cross-fertilising? can you not be cross-fertilising? can they not be cross-fertilising?
Perfect
can I not have cross-fertilised? can you not have cross-fertilised? can he not have cross-fertilised? can we not have cross-fertilised? can you not have cross-fertilised? can they not have cross-fertilised?
V-ing perfect
can I not have been cross-fertilising? can you not have been cross-fertilising? can he not have been cross-fertilising? can we not have been cross-fertilising? can you not have been cross-fertilising? can they not have been cross-fertilising?