I can taw you can taw he can taw we can taw you can taw they can taw
V-ing form
I can be tawing you can be tawing he can be tawing we can be tawing you can be tawing they can be tawing
Perfect
I can have tawed you can have tawed he can have tawed we can have tawed you can have tawed they can have tawed
V-ing perfect
I can have been tawing you can have been tawing he can have been tawing we can have been tawing you can have been tawing they can have been tawing
Negation
Simple form
I can't taw you can't taw he can't taw we can't taw you can't taw they can't taw
V-ing form
I can't be tawing you can't be tawing he can't be tawing we can't be tawing you can't be tawing they can't be tawing
Perfect
I can't have tawed you can't have tawed he can't have tawed we can't have tawed you can't have tawed they can't have tawed
V-ing perfect
I can't have been tawing you can't have been tawing he can't have been tawing we can't have been tawing you can't have been tawing they can't have been tawing
Interrogative form
Simple form
can I taw? can you taw? can he taw? can we taw? can you taw? can they taw?
V-ing form
can I be tawing? can you be tawing? can he be tawing? can we be tawing? can you be tawing? can they be tawing?
Perfect
can I have tawed? can you have tawed? can he have tawed? can we have tawed? can you have tawed? can they have tawed?
V-ing perfect
can I have been tawing? can you have been tawing? can he have been tawing? can we have been tawing? can you have been tawing? can they have been tawing?
Interro-negative form
Simple form
can't I taw? can't you taw? can't he taw? can't we taw? can't you taw? can't they taw?
V-ing form
can't I be tawing? can't you be tawing? can't he be tawing? can't we be tawing? can't you be tawing? can't they be tawing?
Perfect
can't I have tawed? can't you have tawed? can't he have tawed? can't we have tawed? can't you have tawed? can't they have tawed?
V-ing perfect
can't I have been tawing? can't you have been tawing? can't he have been tawing? can't we have been tawing? can't you have been tawing? can't they have been tawing?