I can bobbie you can bobbie he can bobbie we can bobbie you can bobbie they can bobbie
V-ing form
I can be bobbying you can be bobbying he can be bobbying we can be bobbying you can be bobbying they can be bobbying
Perfect
I can have bobbied you can have bobbied he can have bobbied we can have bobbied you can have bobbied they can have bobbied
V-ing perfect
I can have been bobbying you can have been bobbying he can have been bobbying we can have been bobbying you can have been bobbying they can have been bobbying
Negation
Simple form
I can't bobbie you can't bobbie he can't bobbie we can't bobbie you can't bobbie they can't bobbie
V-ing form
I can't be bobbying you can't be bobbying he can't be bobbying we can't be bobbying you can't be bobbying they can't be bobbying
Perfect
I can't have bobbied you can't have bobbied he can't have bobbied we can't have bobbied you can't have bobbied they can't have bobbied
V-ing perfect
I can't have been bobbying you can't have been bobbying he can't have been bobbying we can't have been bobbying you can't have been bobbying they can't have been bobbying
Interrogative form
Simple form
can I bobbie? can you bobbie? can he bobbie? can we bobbie? can you bobbie? can they bobbie?
V-ing form
can I be bobbying? can you be bobbying? can he be bobbying? can we be bobbying? can you be bobbying? can they be bobbying?
Perfect
can I have bobbied? can you have bobbied? can he have bobbied? can we have bobbied? can you have bobbied? can they have bobbied?
V-ing perfect
can I have been bobbying? can you have been bobbying? can he have been bobbying? can we have been bobbying? can you have been bobbying? can they have been bobbying?
Interro-negative form
Simple form
can't I bobbie? can't you bobbie? can't he bobbie? can't we bobbie? can't you bobbie? can't they bobbie?
V-ing form
can't I be bobbying? can't you be bobbying? can't he be bobbying? can't we be bobbying? can't you be bobbying? can't they be bobbying?
Perfect
can't I have bobbied? can't you have bobbied? can't he have bobbied? can't we have bobbied? can't you have bobbied? can't they have bobbied?
V-ing perfect
can't I have been bobbying? can't you have been bobbying? can't he have been bobbying? can't we have been bobbying? can't you have been bobbying? can't they have been bobbying?