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