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 can't wrinkle you can't wrinkle he can't wrinkle we can't wrinkle you can't wrinkle they can't wrinkle
V-ing form
I can't be wrinkling you can't be wrinkling he can't be wrinkling we can't be wrinkling you can't be wrinkling they can't be wrinkling
Perfect
I can't have wrinkled you can't have wrinkled he can't have wrinkled we can't have wrinkled you can't have wrinkled they can't have wrinkled
V-ing perfect
I can't have been wrinkling you can't have been wrinkling he can't have been wrinkling we can't have been wrinkling you can't have been wrinkling they can't 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't I wrinkle? can't you wrinkle? can't he wrinkle? can't we wrinkle? can't you wrinkle? can't they wrinkle?
V-ing form
can't I be wrinkling? can't you be wrinkling? can't he be wrinkling? can't we be wrinkling? can't you be wrinkling? can't they be wrinkling?
Perfect
can't I have wrinkled? can't you have wrinkled? can't he have wrinkled? can't we have wrinkled? can't you have wrinkled? can't they have wrinkled?
V-ing perfect
can't I have been wrinkling? can't you have been wrinkling? can't he have been wrinkling? can't we have been wrinkling? can't you have been wrinkling? can't they have been wrinkling?