I can convert you can convert he can convert we can convert you can convert they can convert
V-ing form
I can be converting you can be converting he can be converting we can be converting you can be converting they can be converting
Perfect
I can have converted you can have converted he can have converted we can have converted you can have converted they can have converted
V-ing perfect
I can have been converting you can have been converting he can have been converting we can have been converting you can have been converting they can have been converting
Negation
Simple form
I cannot convert you cannot convert he cannot convert we cannot convert you cannot convert they cannot convert
V-ing form
I cannot be converting you cannot be converting he cannot be converting we cannot be converting you cannot be converting they cannot be converting
Perfect
I cannot have converted you cannot have converted he cannot have converted we cannot have converted you cannot have converted they cannot have converted
V-ing perfect
I cannot have been converting you cannot have been converting he cannot have been converting we cannot have been converting you cannot have been converting they cannot have been converting
Interrogative form
Simple form
can I convert? can you convert? can he convert? can we convert? can you convert? can they convert?
V-ing form
can I be converting? can you be converting? can he be converting? can we be converting? can you be converting? can they be converting?
Perfect
can I have converted? can you have converted? can he have converted? can we have converted? can you have converted? can they have converted?
V-ing perfect
can I have been converting? can you have been converting? can he have been converting? can we have been converting? can you have been converting? can they have been converting?
Interro-negative form
Simple form
can I not convert? can you not convert? can he not convert? can we not convert? can you not convert? can they not convert?
V-ing form
can I not be converting? can you not be converting? can he not be converting? can we not be converting? can you not be converting? can they not be converting?
Perfect
can I not have converted? can you not have converted? can he not have converted? can we not have converted? can you not have converted? can they not have converted?
V-ing perfect
can I not have been converting? can you not have been converting? can he not have been converting? can we not have been converting? can you not have been converting? can they not have been converting?