I can scheme you can scheme he can scheme we can scheme you can scheme they can scheme
V-ing form
I can be scheming you can be scheming he can be scheming we can be scheming you can be scheming they can be scheming
Perfect
I can have schemed you can have schemed he can have schemed we can have schemed you can have schemed they can have schemed
V-ing perfect
I can have been scheming you can have been scheming he can have been scheming we can have been scheming you can have been scheming they can have been scheming
Negation
Simple form
I can't scheme you can't scheme he can't scheme we can't scheme you can't scheme they can't scheme
V-ing form
I can't be scheming you can't be scheming he can't be scheming we can't be scheming you can't be scheming they can't be scheming
Perfect
I can't have schemed you can't have schemed he can't have schemed we can't have schemed you can't have schemed they can't have schemed
V-ing perfect
I can't have been scheming you can't have been scheming he can't have been scheming we can't have been scheming you can't have been scheming they can't have been scheming
Interrogative form
Simple form
can I scheme? can you scheme? can he scheme? can we scheme? can you scheme? can they scheme?
V-ing form
can I be scheming? can you be scheming? can he be scheming? can we be scheming? can you be scheming? can they be scheming?
Perfect
can I have schemed? can you have schemed? can he have schemed? can we have schemed? can you have schemed? can they have schemed?
V-ing perfect
can I have been scheming? can you have been scheming? can he have been scheming? can we have been scheming? can you have been scheming? can they have been scheming?
Interro-negative form
Simple form
can't I scheme? can't you scheme? can't he scheme? can't we scheme? can't you scheme? can't they scheme?
V-ing form
can't I be scheming? can't you be scheming? can't he be scheming? can't we be scheming? can't you be scheming? can't they be scheming?
Perfect
can't I have schemed? can't you have schemed? can't he have schemed? can't we have schemed? can't you have schemed? can't they have schemed?
V-ing perfect
can't I have been scheming? can't you have been scheming? can't he have been scheming? can't we have been scheming? can't you have been scheming? can't they have been scheming?