I can slit you can slit he can slit we can slit you can slit they can slit
V-ing form
I can be slitting you can be slitting he can be slitting we can be slitting you can be slitting they can be slitting
Perfect
I can have slit you can have slit he can have slit we can have slit you can have slit they can have slit
V-ing perfect
I can have been slitting you can have been slitting he can have been slitting we can have been slitting you can have been slitting they can have been slitting
Negation
Simple form
I cannot slit you cannot slit he cannot slit we cannot slit you cannot slit they cannot slit
V-ing form
I cannot be slitting you cannot be slitting he cannot be slitting we cannot be slitting you cannot be slitting they cannot be slitting
Perfect
I cannot have slit you cannot have slit he cannot have slit we cannot have slit you cannot have slit they cannot have slit
V-ing perfect
I cannot have been slitting you cannot have been slitting he cannot have been slitting we cannot have been slitting you cannot have been slitting they cannot have been slitting
Interrogative form
Simple form
can I slit? can you slit? can he slit? can we slit? can you slit? can they slit?
V-ing form
can I be slitting? can you be slitting? can he be slitting? can we be slitting? can you be slitting? can they be slitting?
Perfect
can I have slit? can you have slit? can he have slit? can we have slit? can you have slit? can they have slit?
V-ing perfect
can I have been slitting? can you have been slitting? can he have been slitting? can we have been slitting? can you have been slitting? can they have been slitting?
Interro-negative form
Simple form
can I not slit? can you not slit? can he not slit? can we not slit? can you not slit? can they not slit?
V-ing form
can I not be slitting? can you not be slitting? can he not be slitting? can we not be slitting? can you not be slitting? can they not be slitting?
Perfect
can I not have slit? can you not have slit? can he not have slit? can we not have slit? can you not have slit? can they not have slit?
V-ing perfect
can I not have been slitting? can you not have been slitting? can he not have been slitting? can we not have been slitting? can you not have been slitting? can they not have been slitting?