I can skew you can skew she can skew we can skew you can skew they can skew
V-ing form
I can be skewing you can be skewing she can be skewing we can be skewing you can be skewing they can be skewing
Perfect
I can have skewed you can have skewed she can have skewed we can have skewed you can have skewed they can have skewed
V-ing perfect
I can have been skewing you can have been skewing she can have been skewing we can have been skewing you can have been skewing they can have been skewing
Negation
Simple form
I cannot skew you cannot skew she cannot skew we cannot skew you cannot skew they cannot skew
V-ing form
I cannot be skewing you cannot be skewing she cannot be skewing we cannot be skewing you cannot be skewing they cannot be skewing
Perfect
I cannot have skewed you cannot have skewed she cannot have skewed we cannot have skewed you cannot have skewed they cannot have skewed
V-ing perfect
I cannot have been skewing you cannot have been skewing she cannot have been skewing we cannot have been skewing you cannot have been skewing they cannot have been skewing
Interrogative form
Simple form
can I skew? can you skew? can she skew? can we skew? can you skew? can they skew?
V-ing form
can I be skewing? can you be skewing? can she be skewing? can we be skewing? can you be skewing? can they be skewing?
Perfect
can I have skewed? can you have skewed? can she have skewed? can we have skewed? can you have skewed? can they have skewed?
V-ing perfect
can I have been skewing? can you have been skewing? can she have been skewing? can we have been skewing? can you have been skewing? can they have been skewing?
Interro-negative form
Simple form
can I not skew? can you not skew? can she not skew? can we not skew? can you not skew? can they not skew?
V-ing form
can I not be skewing? can you not be skewing? can she not be skewing? can we not be skewing? can you not be skewing? can they not be skewing?
Perfect
can I not have skewed? can you not have skewed? can she not have skewed? can we not have skewed? can you not have skewed? can they not have skewed?
V-ing perfect
can I not have been skewing? can you not have been skewing? can she not have been skewing? can we not have been skewing? can you not have been skewing? can they not have been skewing?