I could breast-feed you could breast-feed he could breast-feed we could breast-feed you could breast-feed they could breast-feed
V-ing form
I could be breast-feeding you could be breast-feeding he could be breast-feeding we could be breast-feeding you could be breast-feeding they could be breast-feeding
Perfect
I could have breast-fed you could have breast-fed he could have breast-fed we could have breast-fed you could have breast-fed they could have breast-fed
V-ing perfect
I could have been breast-feeding you could have been breast-feeding he could have been breast-feeding we could have been breast-feeding you could have been breast-feeding they could have been breast-feeding
Negation
Simple form
I couldn't breast-feed you couldn't breast-feed he couldn't breast-feed we couldn't breast-feed you couldn't breast-feed they couldn't breast-feed
V-ing form
I couldn't be breast-feeding you couldn't be breast-feeding he couldn't be breast-feeding we couldn't be breast-feeding you couldn't be breast-feeding they couldn't be breast-feeding
Perfect
I couldn't have breast-fed you couldn't have breast-fed he couldn't have breast-fed we couldn't have breast-fed you couldn't have breast-fed they couldn't have breast-fed
V-ing perfect
I couldn't have been breast-feeding you couldn't have been breast-feeding he couldn't have been breast-feeding we couldn't have been breast-feeding you couldn't have been breast-feeding they couldn't have been breast-feeding
Interrogative form
Simple form
could I breast-feed? could you breast-feed? could he breast-feed? could we breast-feed? could you breast-feed? could they breast-feed?
V-ing form
could I be breast-feeding? could you be breast-feeding? could he be breast-feeding? could we be breast-feeding? could you be breast-feeding? could they be breast-feeding?
Perfect
could I have breast-fed? could you have breast-fed? could he have breast-fed? could we have breast-fed? could you have breast-fed? could they have breast-fed?
V-ing perfect
could I have been breast-feeding? could you have been breast-feeding? could he have been breast-feeding? could we have been breast-feeding? could you have been breast-feeding? could they have been breast-feeding?
Interro-negative form
Simple form
couldn't I breast-feed? couldn't you breast-feed? couldn't he breast-feed? couldn't we breast-feed? couldn't you breast-feed? couldn't they breast-feed?
V-ing form
couldn't I be breast-feeding? couldn't you be breast-feeding? couldn't he be breast-feeding? couldn't we be breast-feeding? couldn't you be breast-feeding? couldn't they be breast-feeding?
Perfect
couldn't I have breast-fed? couldn't you have breast-fed? couldn't he have breast-fed? couldn't we have breast-fed? couldn't you have breast-fed? couldn't they have breast-fed?
V-ing perfect
couldn't I have been breast-feeding? couldn't you have been breast-feeding? couldn't he have been breast-feeding? couldn't we have been breast-feeding? couldn't you have been breast-feeding? couldn't they have been breast-feeding?