I can shovel you can shovel he can shovel we can shovel you can shovel they can shovel
V-ing form
I can be shovelling you can be shovelling he can be shovelling we can be shovelling you can be shovelling they can be shovelling
Perfect
I can have shovelled you can have shovelled he can have shovelled we can have shovelled you can have shovelled they can have shovelled
V-ing perfect
I can have been shovelling you can have been shovelling he can have been shovelling we can have been shovelling you can have been shovelling they can have been shovelling
Negation
Simple form
I can't shovel you can't shovel he can't shovel we can't shovel you can't shovel they can't shovel
V-ing form
I can't be shovelling you can't be shovelling he can't be shovelling we can't be shovelling you can't be shovelling they can't be shovelling
Perfect
I can't have shovelled you can't have shovelled he can't have shovelled we can't have shovelled you can't have shovelled they can't have shovelled
V-ing perfect
I can't have been shovelling you can't have been shovelling he can't have been shovelling we can't have been shovelling you can't have been shovelling they can't have been shovelling
Interrogative form
Simple form
can I shovel? can you shovel? can he shovel? can we shovel? can you shovel? can they shovel?
V-ing form
can I be shovelling? can you be shovelling? can he be shovelling? can we be shovelling? can you be shovelling? can they be shovelling?
Perfect
can I have shovelled? can you have shovelled? can he have shovelled? can we have shovelled? can you have shovelled? can they have shovelled?
V-ing perfect
can I have been shovelling? can you have been shovelling? can he have been shovelling? can we have been shovelling? can you have been shovelling? can they have been shovelling?
Interro-negative form
Simple form
can't I shovel? can't you shovel? can't he shovel? can't we shovel? can't you shovel? can't they shovel?
V-ing form
can't I be shovelling? can't you be shovelling? can't he be shovelling? can't we be shovelling? can't you be shovelling? can't they be shovelling?
Perfect
can't I have shovelled? can't you have shovelled? can't he have shovelled? can't we have shovelled? can't you have shovelled? can't they have shovelled?
V-ing perfect
can't I have been shovelling? can't you have been shovelling? can't he have been shovelling? can't we have been shovelling? can't you have been shovelling? can't they have been shovelling?