I can wrinkle you can wrinkle he can wrinkle we can wrinkle you can wrinkle they can wrinkle
V-ing form
I can be wrinkling you can be wrinkling he can be wrinkling we can be wrinkling you can be wrinkling they can be wrinkling
Perfect
I can have wrinkled you can have wrinkled he can have wrinkled we can have wrinkled you can have wrinkled they can have wrinkled
V-ing perfect
I can have been wrinkling you can have been wrinkling he can have been wrinkling we can have been wrinkling you can have been wrinkling they can have been wrinkling
Negation
Simple form
I cannot wrinkle you cannot wrinkle he cannot wrinkle we cannot wrinkle you cannot wrinkle they cannot wrinkle
V-ing form
I cannot be wrinkling you cannot be wrinkling he cannot be wrinkling we cannot be wrinkling you cannot be wrinkling they cannot be wrinkling
Perfect
I cannot have wrinkled you cannot have wrinkled he cannot have wrinkled we cannot have wrinkled you cannot have wrinkled they cannot have wrinkled
V-ing perfect
I cannot have been wrinkling you cannot have been wrinkling he cannot have been wrinkling we cannot have been wrinkling you cannot have been wrinkling they cannot have been wrinkling
Interrogative form
Simple form
can I wrinkle? can you wrinkle? can he wrinkle? can we wrinkle? can you wrinkle? can they wrinkle?
V-ing form
can I be wrinkling? can you be wrinkling? can he be wrinkling? can we be wrinkling? can you be wrinkling? can they be wrinkling?
Perfect
can I have wrinkled? can you have wrinkled? can he have wrinkled? can we have wrinkled? can you have wrinkled? can they have wrinkled?
V-ing perfect
can I have been wrinkling? can you have been wrinkling? can he have been wrinkling? can we have been wrinkling? can you have been wrinkling? can they have been wrinkling?
Interro-negative form
Simple form
can I not wrinkle? can you not wrinkle? can he not wrinkle? can we not wrinkle? can you not wrinkle? can they not wrinkle?
V-ing form
can I not be wrinkling? can you not be wrinkling? can he not be wrinkling? can we not be wrinkling? can you not be wrinkling? can they not be wrinkling?
Perfect
can I not have wrinkled? can you not have wrinkled? can he not have wrinkled? can we not have wrinkled? can you not have wrinkled? can they not have wrinkled?
V-ing perfect
can I not have been wrinkling? can you not have been wrinkling? can he not have been wrinkling? can we not have been wrinkling? can you not have been wrinkling? can they not have been wrinkling?