I could cleanse you could cleanse he could cleanse we could cleanse you could cleanse they could cleanse
V-ing form
I could be cleansing you could be cleansing he could be cleansing we could be cleansing you could be cleansing they could be cleansing
Perfect
I could have cleansed you could have cleansed he could have cleansed we could have cleansed you could have cleansed they could have cleansed
V-ing perfect
I could have been cleansing you could have been cleansing he could have been cleansing we could have been cleansing you could have been cleansing they could have been cleansing
Negation
Simple form
I couldn't cleanse you couldn't cleanse he couldn't cleanse we couldn't cleanse you couldn't cleanse they couldn't cleanse
V-ing form
I couldn't be cleansing you couldn't be cleansing he couldn't be cleansing we couldn't be cleansing you couldn't be cleansing they couldn't be cleansing
Perfect
I couldn't have cleansed you couldn't have cleansed he couldn't have cleansed we couldn't have cleansed you couldn't have cleansed they couldn't have cleansed
V-ing perfect
I couldn't have been cleansing you couldn't have been cleansing he couldn't have been cleansing we couldn't have been cleansing you couldn't have been cleansing they couldn't have been cleansing
Interrogative form
Simple form
could I cleanse? could you cleanse? could he cleanse? could we cleanse? could you cleanse? could they cleanse?
V-ing form
could I be cleansing? could you be cleansing? could he be cleansing? could we be cleansing? could you be cleansing? could they be cleansing?
Perfect
could I have cleansed? could you have cleansed? could he have cleansed? could we have cleansed? could you have cleansed? could they have cleansed?
V-ing perfect
could I have been cleansing? could you have been cleansing? could he have been cleansing? could we have been cleansing? could you have been cleansing? could they have been cleansing?
Interro-negative form
Simple form
couldn't I cleanse? couldn't you cleanse? couldn't he cleanse? couldn't we cleanse? couldn't you cleanse? couldn't they cleanse?
V-ing form
couldn't I be cleansing? couldn't you be cleansing? couldn't he be cleansing? couldn't we be cleansing? couldn't you be cleansing? couldn't they be cleansing?
Perfect
couldn't I have cleansed? couldn't you have cleansed? couldn't he have cleansed? couldn't we have cleansed? couldn't you have cleansed? couldn't they have cleansed?
V-ing perfect
couldn't I have been cleansing? couldn't you have been cleansing? couldn't he have been cleansing? couldn't we have been cleansing? couldn't you have been cleansing? couldn't they have been cleansing?