I can creep you can creep she can creep we can creep you can creep they can creep
V-ing form
I can be creeping you can be creeping she can be creeping we can be creeping you can be creeping they can be creeping
Perfect
I can have crept you can have crept she can have crept we can have crept you can have crept they can have crept
V-ing perfect
I can have been creeping you can have been creeping she can have been creeping we can have been creeping you can have been creeping they can have been creeping
Negation
Simple form
I cannot creep you cannot creep she cannot creep we cannot creep you cannot creep they cannot creep
V-ing form
I cannot be creeping you cannot be creeping she cannot be creeping we cannot be creeping you cannot be creeping they cannot be creeping
Perfect
I cannot have crept you cannot have crept she cannot have crept we cannot have crept you cannot have crept they cannot have crept
V-ing perfect
I cannot have been creeping you cannot have been creeping she cannot have been creeping we cannot have been creeping you cannot have been creeping they cannot have been creeping
Interrogative form
Simple form
can I creep? can you creep? can she creep? can we creep? can you creep? can they creep?
V-ing form
can I be creeping? can you be creeping? can she be creeping? can we be creeping? can you be creeping? can they be creeping?
Perfect
can I have crept? can you have crept? can she have crept? can we have crept? can you have crept? can they have crept?
V-ing perfect
can I have been creeping? can you have been creeping? can she have been creeping? can we have been creeping? can you have been creeping? can they have been creeping?
Interro-negative form
Simple form
can I not creep? can you not creep? can she not creep? can we not creep? can you not creep? can they not creep?
V-ing form
can I not be creeping? can you not be creeping? can she not be creeping? can we not be creeping? can you not be creeping? can they not be creeping?
Perfect
can I not have crept? can you not have crept? can she not have crept? can we not have crept? can you not have crept? can they not have crept?
V-ing perfect
can I not have been creeping? can you not have been creeping? can she not have been creeping? can we not have been creeping? can you not have been creeping? can they not have been creeping?