I can bike you can bike he can bike we can bike you can bike they can bike
V-ing form
I can be biking you can be biking he can be biking we can be biking you can be biking they can be biking
Perfect
I can have biked you can have biked he can have biked we can have biked you can have biked they can have biked
V-ing perfect
I can have been biking you can have been biking he can have been biking we can have been biking you can have been biking they can have been biking
Negation
Simple form
I cannot bike you cannot bike he cannot bike we cannot bike you cannot bike they cannot bike
V-ing form
I cannot be biking you cannot be biking he cannot be biking we cannot be biking you cannot be biking they cannot be biking
Perfect
I cannot have biked you cannot have biked he cannot have biked we cannot have biked you cannot have biked they cannot have biked
V-ing perfect
I cannot have been biking you cannot have been biking he cannot have been biking we cannot have been biking you cannot have been biking they cannot have been biking
Interrogative form
Simple form
can I bike? can you bike? can he bike? can we bike? can you bike? can they bike?
V-ing form
can I be biking? can you be biking? can he be biking? can we be biking? can you be biking? can they be biking?
Perfect
can I have biked? can you have biked? can he have biked? can we have biked? can you have biked? can they have biked?
V-ing perfect
can I have been biking? can you have been biking? can he have been biking? can we have been biking? can you have been biking? can they have been biking?
Interro-negative form
Simple form
can I not bike? can you not bike? can he not bike? can we not bike? can you not bike? can they not bike?
V-ing form
can I not be biking? can you not be biking? can he not be biking? can we not be biking? can you not be biking? can they not be biking?
Perfect
can I not have biked? can you not have biked? can he not have biked? can we not have biked? can you not have biked? can they not have biked?
V-ing perfect
can I not have been biking? can you not have been biking? can he not have been biking? can we not have been biking? can you not have been biking? can they not have been biking?