I can scheme you can scheme she can scheme we can scheme you can scheme they can scheme
V-ing form
I can be scheming you can be scheming she can be scheming we can be scheming you can be scheming they can be scheming
Perfect
I can have schemed you can have schemed she 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 she 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 she 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 she 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 she 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 she 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 she scheme? can we scheme? can you scheme? can they scheme?
V-ing form
can I be scheming? can you be scheming? can she be scheming? can we be scheming? can you be scheming? can they be scheming?
Perfect
can I have schemed? can you have schemed? can she 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 she 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 she 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 she 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 she 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 she have been scheming? can't we have been scheming? can't you have been scheming? can't they have been scheming?