I can waive you can waive she can waive we can waive you can waive they can waive
V-ing form
I can be waiving you can be waiving she can be waiving we can be waiving you can be waiving they can be waiving
Perfect
I can have waived you can have waived she can have waived we can have waived you can have waived they can have waived
V-ing perfect
I can have been waiving you can have been waiving she can have been waiving we can have been waiving you can have been waiving they can have been waiving
Negation
Simple form
I can't waive you can't waive she can't waive we can't waive you can't waive they can't waive
V-ing form
I can't be waiving you can't be waiving she can't be waiving we can't be waiving you can't be waiving they can't be waiving
Perfect
I can't have waived you can't have waived she can't have waived we can't have waived you can't have waived they can't have waived
V-ing perfect
I can't have been waiving you can't have been waiving she can't have been waiving we can't have been waiving you can't have been waiving they can't have been waiving
Interrogative form
Simple form
can I waive? can you waive? can she waive? can we waive? can you waive? can they waive?
V-ing form
can I be waiving? can you be waiving? can she be waiving? can we be waiving? can you be waiving? can they be waiving?
Perfect
can I have waived? can you have waived? can she have waived? can we have waived? can you have waived? can they have waived?
V-ing perfect
can I have been waiving? can you have been waiving? can she have been waiving? can we have been waiving? can you have been waiving? can they have been waiving?
Interro-negative form
Simple form
can't I waive? can't you waive? can't she waive? can't we waive? can't you waive? can't they waive?
V-ing form
can't I be waiving? can't you be waiving? can't she be waiving? can't we be waiving? can't you be waiving? can't they be waiving?
Perfect
can't I have waived? can't you have waived? can't she have waived? can't we have waived? can't you have waived? can't they have waived?
V-ing perfect
can't I have been waiving? can't you have been waiving? can't she have been waiving? can't we have been waiving? can't you have been waiving? can't they have been waiving?