I can plant you can plant she can plant we can plant you can plant they can plant
V-ing form
I can be planting you can be planting she can be planting we can be planting you can be planting they can be planting
Perfect
I can have planted you can have planted she can have planted we can have planted you can have planted they can have planted
V-ing perfect
I can have been planting you can have been planting she can have been planting we can have been planting you can have been planting they can have been planting
Negation
Simple form
I can't plant you can't plant she can't plant we can't plant you can't plant they can't plant
V-ing form
I can't be planting you can't be planting she can't be planting we can't be planting you can't be planting they can't be planting
Perfect
I can't have planted you can't have planted she can't have planted we can't have planted you can't have planted they can't have planted
V-ing perfect
I can't have been planting you can't have been planting she can't have been planting we can't have been planting you can't have been planting they can't have been planting
Interrogative form
Simple form
can I plant? can you plant? can she plant? can we plant? can you plant? can they plant?
V-ing form
can I be planting? can you be planting? can she be planting? can we be planting? can you be planting? can they be planting?
Perfect
can I have planted? can you have planted? can she have planted? can we have planted? can you have planted? can they have planted?
V-ing perfect
can I have been planting? can you have been planting? can she have been planting? can we have been planting? can you have been planting? can they have been planting?
Interro-negative form
Simple form
can't I plant? can't you plant? can't she plant? can't we plant? can't you plant? can't they plant?
V-ing form
can't I be planting? can't you be planting? can't she be planting? can't we be planting? can't you be planting? can't they be planting?
Perfect
can't I have planted? can't you have planted? can't she have planted? can't we have planted? can't you have planted? can't they have planted?
V-ing perfect
can't I have been planting? can't you have been planting? can't she have been planting? can't we have been planting? can't you have been planting? can't they have been planting?