I can mix you can mix she can mix we can mix you can mix they can mix
V-ing form
I can be mixing you can be mixing she can be mixing we can be mixing you can be mixing they can be mixing
Perfect
I can have mixed you can have mixed she can have mixed we can have mixed you can have mixed they can have mixed
V-ing perfect
I can have been mixing you can have been mixing she can have been mixing we can have been mixing you can have been mixing they can have been mixing
Negation
Simple form
I can't mix you can't mix she can't mix we can't mix you can't mix they can't mix
V-ing form
I can't be mixing you can't be mixing she can't be mixing we can't be mixing you can't be mixing they can't be mixing
Perfect
I can't have mixed you can't have mixed she can't have mixed we can't have mixed you can't have mixed they can't have mixed
V-ing perfect
I can't have been mixing you can't have been mixing she can't have been mixing we can't have been mixing you can't have been mixing they can't have been mixing
Interrogative form
Simple form
can I mix? can you mix? can she mix? can we mix? can you mix? can they mix?
V-ing form
can I be mixing? can you be mixing? can she be mixing? can we be mixing? can you be mixing? can they be mixing?
Perfect
can I have mixed? can you have mixed? can she have mixed? can we have mixed? can you have mixed? can they have mixed?
V-ing perfect
can I have been mixing? can you have been mixing? can she have been mixing? can we have been mixing? can you have been mixing? can they have been mixing?
Interro-negative form
Simple form
can't I mix? can't you mix? can't she mix? can't we mix? can't you mix? can't they mix?
V-ing form
can't I be mixing? can't you be mixing? can't she be mixing? can't we be mixing? can't you be mixing? can't they be mixing?
Perfect
can't I have mixed? can't you have mixed? can't she have mixed? can't we have mixed? can't you have mixed? can't they have mixed?
V-ing perfect
can't I have been mixing? can't you have been mixing? can't she have been mixing? can't we have been mixing? can't you have been mixing? can't they have been mixing?