I could hyperoxygenate you could hyperoxygenate she could hyperoxygenate we could hyperoxygenate you could hyperoxygenate they could hyperoxygenate
V-ing form
I could be hyperoxygenating you could be hyperoxygenating she could be hyperoxygenating we could be hyperoxygenating you could be hyperoxygenating they could be hyperoxygenating
Perfect
I could have hyperoxygenated you could have hyperoxygenated she could have hyperoxygenated we could have hyperoxygenated you could have hyperoxygenated they could have hyperoxygenated
V-ing perfect
I could have been hyperoxygenating you could have been hyperoxygenating she could have been hyperoxygenating we could have been hyperoxygenating you could have been hyperoxygenating they could have been hyperoxygenating
Negation
Simple form
I couldn't hyperoxygenate you couldn't hyperoxygenate she couldn't hyperoxygenate we couldn't hyperoxygenate you couldn't hyperoxygenate they couldn't hyperoxygenate
V-ing form
I couldn't be hyperoxygenating you couldn't be hyperoxygenating she couldn't be hyperoxygenating we couldn't be hyperoxygenating you couldn't be hyperoxygenating they couldn't be hyperoxygenating
Perfect
I couldn't have hyperoxygenated you couldn't have hyperoxygenated she couldn't have hyperoxygenated we couldn't have hyperoxygenated you couldn't have hyperoxygenated they couldn't have hyperoxygenated
V-ing perfect
I couldn't have been hyperoxygenating you couldn't have been hyperoxygenating she couldn't have been hyperoxygenating we couldn't have been hyperoxygenating you couldn't have been hyperoxygenating they couldn't have been hyperoxygenating
Interrogative form
Simple form
could I hyperoxygenate? could you hyperoxygenate? could she hyperoxygenate? could we hyperoxygenate? could you hyperoxygenate? could they hyperoxygenate?
V-ing form
could I be hyperoxygenating? could you be hyperoxygenating? could she be hyperoxygenating? could we be hyperoxygenating? could you be hyperoxygenating? could they be hyperoxygenating?
Perfect
could I have hyperoxygenated? could you have hyperoxygenated? could she have hyperoxygenated? could we have hyperoxygenated? could you have hyperoxygenated? could they have hyperoxygenated?
V-ing perfect
could I have been hyperoxygenating? could you have been hyperoxygenating? could she have been hyperoxygenating? could we have been hyperoxygenating? could you have been hyperoxygenating? could they have been hyperoxygenating?
Interro-negative form
Simple form
couldn't I hyperoxygenate? couldn't you hyperoxygenate? couldn't she hyperoxygenate? couldn't we hyperoxygenate? couldn't you hyperoxygenate? couldn't they hyperoxygenate?
V-ing form
couldn't I be hyperoxygenating? couldn't you be hyperoxygenating? couldn't she be hyperoxygenating? couldn't we be hyperoxygenating? couldn't you be hyperoxygenating? couldn't they be hyperoxygenating?
Perfect
couldn't I have hyperoxygenated? couldn't you have hyperoxygenated? couldn't she have hyperoxygenated? couldn't we have hyperoxygenated? couldn't you have hyperoxygenated? couldn't they have hyperoxygenated?
V-ing perfect
couldn't I have been hyperoxygenating? couldn't you have been hyperoxygenating? couldn't she have been hyperoxygenating? couldn't we have been hyperoxygenating? couldn't you have been hyperoxygenating? couldn't they have been hyperoxygenating?