I can bow you can bow he can bow we can bow you can bow they can bow
V-ing form
I can be bowing you can be bowing he can be bowing we can be bowing you can be bowing they can be bowing
Perfect
I can have bowed you can have bowed he can have bowed we can have bowed you can have bowed they can have bowed
V-ing perfect
I can have been bowing you can have been bowing he can have been bowing we can have been bowing you can have been bowing they can have been bowing
Negation
Simple form
I can't bow you can't bow he can't bow we can't bow you can't bow they can't bow
V-ing form
I can't be bowing you can't be bowing he can't be bowing we can't be bowing you can't be bowing they can't be bowing
Perfect
I can't have bowed you can't have bowed he can't have bowed we can't have bowed you can't have bowed they can't have bowed
V-ing perfect
I can't have been bowing you can't have been bowing he can't have been bowing we can't have been bowing you can't have been bowing they can't have been bowing
Interrogative form
Simple form
can I bow? can you bow? can he bow? can we bow? can you bow? can they bow?
V-ing form
can I be bowing? can you be bowing? can he be bowing? can we be bowing? can you be bowing? can they be bowing?
Perfect
can I have bowed? can you have bowed? can he have bowed? can we have bowed? can you have bowed? can they have bowed?
V-ing perfect
can I have been bowing? can you have been bowing? can he have been bowing? can we have been bowing? can you have been bowing? can they have been bowing?
Interro-negative form
Simple form
can't I bow? can't you bow? can't he bow? can't we bow? can't you bow? can't they bow?
V-ing form
can't I be bowing? can't you be bowing? can't he be bowing? can't we be bowing? can't you be bowing? can't they be bowing?
Perfect
can't I have bowed? can't you have bowed? can't he have bowed? can't we have bowed? can't you have bowed? can't they have bowed?
V-ing perfect
can't I have been bowing? can't you have been bowing? can't he have been bowing? can't we have been bowing? can't you have been bowing? can't they have been bowing?