I can invert you can invert she can invert we can invert you can invert they can invert
V-ing form
I can be inverting you can be inverting she can be inverting we can be inverting you can be inverting they can be inverting
Perfect
I can have inverted you can have inverted she can have inverted we can have inverted you can have inverted they can have inverted
V-ing perfect
I can have been inverting you can have been inverting she can have been inverting we can have been inverting you can have been inverting they can have been inverting
Negation
Simple form
I cannot invert you cannot invert she cannot invert we cannot invert you cannot invert they cannot invert
V-ing form
I cannot be inverting you cannot be inverting she cannot be inverting we cannot be inverting you cannot be inverting they cannot be inverting
Perfect
I cannot have inverted you cannot have inverted she cannot have inverted we cannot have inverted you cannot have inverted they cannot have inverted
V-ing perfect
I cannot have been inverting you cannot have been inverting she cannot have been inverting we cannot have been inverting you cannot have been inverting they cannot have been inverting
Interrogative form
Simple form
can I invert? can you invert? can she invert? can we invert? can you invert? can they invert?
V-ing form
can I be inverting? can you be inverting? can she be inverting? can we be inverting? can you be inverting? can they be inverting?
Perfect
can I have inverted? can you have inverted? can she have inverted? can we have inverted? can you have inverted? can they have inverted?
V-ing perfect
can I have been inverting? can you have been inverting? can she have been inverting? can we have been inverting? can you have been inverting? can they have been inverting?
Interro-negative form
Simple form
can I not invert? can you not invert? can she not invert? can we not invert? can you not invert? can they not invert?
V-ing form
can I not be inverting? can you not be inverting? can she not be inverting? can we not be inverting? can you not be inverting? can they not be inverting?
Perfect
can I not have inverted? can you not have inverted? can she not have inverted? can we not have inverted? can you not have inverted? can they not have inverted?
V-ing perfect
can I not have been inverting? can you not have been inverting? can she not have been inverting? can we not have been inverting? can you not have been inverting? can they not have been inverting?