I can tease you can tease he can tease we can tease you can tease they can tease
V-ing form
I can be teasing you can be teasing he can be teasing we can be teasing you can be teasing they can be teasing
Perfect
I can have teased you can have teased he can have teased we can have teased you can have teased they can have teased
V-ing perfect
I can have been teasing you can have been teasing he can have been teasing we can have been teasing you can have been teasing they can have been teasing
Negation
Simple form
I cannot tease you cannot tease he cannot tease we cannot tease you cannot tease they cannot tease
V-ing form
I cannot be teasing you cannot be teasing he cannot be teasing we cannot be teasing you cannot be teasing they cannot be teasing
Perfect
I cannot have teased you cannot have teased he cannot have teased we cannot have teased you cannot have teased they cannot have teased
V-ing perfect
I cannot have been teasing you cannot have been teasing he cannot have been teasing we cannot have been teasing you cannot have been teasing they cannot have been teasing
Interrogative form
Simple form
can I tease? can you tease? can he tease? can we tease? can you tease? can they tease?
V-ing form
can I be teasing? can you be teasing? can he be teasing? can we be teasing? can you be teasing? can they be teasing?
Perfect
can I have teased? can you have teased? can he have teased? can we have teased? can you have teased? can they have teased?
V-ing perfect
can I have been teasing? can you have been teasing? can he have been teasing? can we have been teasing? can you have been teasing? can they have been teasing?
Interro-negative form
Simple form
can I not tease? can you not tease? can he not tease? can we not tease? can you not tease? can they not tease?
V-ing form
can I not be teasing? can you not be teasing? can he not be teasing? can we not be teasing? can you not be teasing? can they not be teasing?
Perfect
can I not have teased? can you not have teased? can he not have teased? can we not have teased? can you not have teased? can they not have teased?
V-ing perfect
can I not have been teasing? can you not have been teasing? can he not have been teasing? can we not have been teasing? can you not have been teasing? can they not have been teasing?