I can degrease you can degrease he can degrease we can degrease you can degrease they can degrease
V-ing form
I can be degreasing you can be degreasing he can be degreasing we can be degreasing you can be degreasing they can be degreasing
Perfect
I can have degreased you can have degreased he can have degreased we can have degreased you can have degreased they can have degreased
V-ing perfect
I can have been degreasing you can have been degreasing he can have been degreasing we can have been degreasing you can have been degreasing they can have been degreasing
Negation
Simple form
I can't degrease you can't degrease he can't degrease we can't degrease you can't degrease they can't degrease
V-ing form
I can't be degreasing you can't be degreasing he can't be degreasing we can't be degreasing you can't be degreasing they can't be degreasing
Perfect
I can't have degreased you can't have degreased he can't have degreased we can't have degreased you can't have degreased they can't have degreased
V-ing perfect
I can't have been degreasing you can't have been degreasing he can't have been degreasing we can't have been degreasing you can't have been degreasing they can't have been degreasing
Interrogative form
Simple form
can I degrease? can you degrease? can he degrease? can we degrease? can you degrease? can they degrease?
V-ing form
can I be degreasing? can you be degreasing? can he be degreasing? can we be degreasing? can you be degreasing? can they be degreasing?
Perfect
can I have degreased? can you have degreased? can he have degreased? can we have degreased? can you have degreased? can they have degreased?
V-ing perfect
can I have been degreasing? can you have been degreasing? can he have been degreasing? can we have been degreasing? can you have been degreasing? can they have been degreasing?
Interro-negative form
Simple form
can't I degrease? can't you degrease? can't he degrease? can't we degrease? can't you degrease? can't they degrease?
V-ing form
can't I be degreasing? can't you be degreasing? can't he be degreasing? can't we be degreasing? can't you be degreasing? can't they be degreasing?
Perfect
can't I have degreased? can't you have degreased? can't he have degreased? can't we have degreased? can't you have degreased? can't they have degreased?
V-ing perfect
can't I have been degreasing? can't you have been degreasing? can't he have been degreasing? can't we have been degreasing? can't you have been degreasing? can't they have been degreasing?