I can purple you can purple she can purple we can purple you can purple they can purple
V-ing form
I can be purpling you can be purpling she can be purpling we can be purpling you can be purpling they can be purpling
Perfect
I can have purpled you can have purpled she 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 she 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 she 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 she 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 she 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 she 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 she purple? can we purple? can you purple? can they purple?
V-ing form
can I be purpling? can you be purpling? can she be purpling? can we be purpling? can you be purpling? can they be purpling?
Perfect
can I have purpled? can you have purpled? can she 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 she 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 she 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 she 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 she 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 she have been purpling? can't we have been purpling? can't you have been purpling? can't they have been purpling?