I can wash you can wash she can wash we can wash you can wash they can wash
V-ing form
I can be washing you can be washing she can be washing we can be washing you can be washing they can be washing
Perfect
I can have washed you can have washed she can have washed we can have washed you can have washed they can have washed
V-ing perfect
I can have been washing you can have been washing she can have been washing we can have been washing you can have been washing they can have been washing
Negation
Simple form
I cannot wash you cannot wash she cannot wash we cannot wash you cannot wash they cannot wash
V-ing form
I cannot be washing you cannot be washing she cannot be washing we cannot be washing you cannot be washing they cannot be washing
Perfect
I cannot have washed you cannot have washed she cannot have washed we cannot have washed you cannot have washed they cannot have washed
V-ing perfect
I cannot have been washing you cannot have been washing she cannot have been washing we cannot have been washing you cannot have been washing they cannot have been washing
Interrogative form
Simple form
can I wash? can you wash? can she wash? can we wash? can you wash? can they wash?
V-ing form
can I be washing? can you be washing? can she be washing? can we be washing? can you be washing? can they be washing?
Perfect
can I have washed? can you have washed? can she have washed? can we have washed? can you have washed? can they have washed?
V-ing perfect
can I have been washing? can you have been washing? can she have been washing? can we have been washing? can you have been washing? can they have been washing?
Interro-negative form
Simple form
can I not wash? can you not wash? can she not wash? can we not wash? can you not wash? can they not wash?
V-ing form
can I not be washing? can you not be washing? can she not be washing? can we not be washing? can you not be washing? can they not be washing?
Perfect
can I not have washed? can you not have washed? can she not have washed? can we not have washed? can you not have washed? can they not have washed?
V-ing perfect
can I not have been washing? can you not have been washing? can she not have been washing? can we not have been washing? can you not have been washing? can they not have been washing?