I can plane you can plane he can plane we can plane you can plane they can plane
V-ing form
I can be planing you can be planing he can be planing we can be planing you can be planing they can be planing
Perfect
I can have planed you can have planed he can have planed we can have planed you can have planed they can have planed
V-ing perfect
I can have been planing you can have been planing he can have been planing we can have been planing you can have been planing they can have been planing
Negation
Simple form
I can't plane you can't plane he can't plane we can't plane you can't plane they can't plane
V-ing form
I can't be planing you can't be planing he can't be planing we can't be planing you can't be planing they can't be planing
Perfect
I can't have planed you can't have planed he can't have planed we can't have planed you can't have planed they can't have planed
V-ing perfect
I can't have been planing you can't have been planing he can't have been planing we can't have been planing you can't have been planing they can't have been planing
Interrogative form
Simple form
can I plane? can you plane? can he plane? can we plane? can you plane? can they plane?
V-ing form
can I be planing? can you be planing? can he be planing? can we be planing? can you be planing? can they be planing?
Perfect
can I have planed? can you have planed? can he have planed? can we have planed? can you have planed? can they have planed?
V-ing perfect
can I have been planing? can you have been planing? can he have been planing? can we have been planing? can you have been planing? can they have been planing?
Interro-negative form
Simple form
can't I plane? can't you plane? can't he plane? can't we plane? can't you plane? can't they plane?
V-ing form
can't I be planing? can't you be planing? can't he be planing? can't we be planing? can't you be planing? can't they be planing?
Perfect
can't I have planed? can't you have planed? can't he have planed? can't we have planed? can't you have planed? can't they have planed?
V-ing perfect
can't I have been planing? can't you have been planing? can't he have been planing? can't we have been planing? can't you have been planing? can't they have been planing?