I can purple you can purple he can purple we can purple you can purple they can purple
V-ing form
I can be purpling you can be purpling he can be purpling we can be purpling you can be purpling they can be purpling
Perfect
I can have purpled you can have purpled he can have purpled we can have purpled you can have purpled they can have purpled
V-ing perfect
I can have been purpling you can have been purpling he can have been purpling we can have been purpling you can have been purpling they can have been purpling
Negation
Simple form
I can't purple you can't purple he can't purple we can't purple you can't purple they can't purple
V-ing form
I can't be purpling you can't be purpling he can't be purpling we can't be purpling you can't be purpling they can't be purpling
Perfect
I can't have purpled you can't have purpled he can't have purpled we can't have purpled you can't have purpled they can't have purpled
V-ing perfect
I can't have been purpling you can't have been purpling he can't have been purpling we can't have been purpling you can't have been purpling they can't have been purpling
Interrogative form
Simple form
can I purple? can you purple? can he purple? can we purple? can you purple? can they purple?
V-ing form
can I be purpling? can you be purpling? can he be purpling? can we be purpling? can you be purpling? can they be purpling?
Perfect
can I have purpled? can you have purpled? can he have purpled? can we have purpled? can you have purpled? can they have purpled?
V-ing perfect
can I have been purpling? can you have been purpling? can he have been purpling? can we have been purpling? can you have been purpling? can they have been purpling?
Interro-negative form
Simple form
can't I purple? can't you purple? can't he purple? can't we purple? can't you purple? can't they purple?
V-ing form
can't I be purpling? can't you be purpling? can't he be purpling? can't we be purpling? can't you be purpling? can't they be purpling?
Perfect
can't I have purpled? can't you have purpled? can't he have purpled? can't we have purpled? can't you have purpled? can't they have purpled?
V-ing perfect
can't I have been purpling? can't you have been purpling? can't he have been purpling? can't we have been purpling? can't you have been purpling? can't they have been purpling?