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