English verb conjugation
COULD SEROTYPE

Regular verb: serotype - serotyped - serotyped

Affirmation

Simple form	V-ing form
I could serotype you could serotype he could serotype we could serotype you could serotype they could serotype	I could be serotyping you could be serotyping he could be serotyping we could be serotyping you could be serotyping they could be serotyping
Perfect	V-ing perfect
I could have serotyped you could have serotyped he could have serotyped we could have serotyped you could have serotyped they could have serotyped	I could have been serotyping you could have been serotyping he could have been serotyping we could have been serotyping you could have been serotyping they could have been serotyping

Negation

Simple form	V-ing form
I could not serotype you could not serotype he could not serotype we could not serotype you could not serotype they could not serotype	I could not be serotyping you could not be serotyping he could not be serotyping we could not be serotyping you could not be serotyping they could not be serotyping
Perfect	V-ing perfect
I could not have serotyped you could not have serotyped he could not have serotyped we could not have serotyped you could not have serotyped they could not have serotyped	I could not have been serotyping you could not have been serotyping he could not have been serotyping we could not have been serotyping you could not have been serotyping they could not have been serotyping

Interrogative form

Simple form	V-ing form
could I serotype? could you serotype? could he serotype? could we serotype? could you serotype? could they serotype?	could I be serotyping? could you be serotyping? could he be serotyping? could we be serotyping? could you be serotyping? could they be serotyping?
Perfect	V-ing perfect
could I have serotyped? could you have serotyped? could he have serotyped? could we have serotyped? could you have serotyped? could they have serotyped?	could I have been serotyping? could you have been serotyping? could he have been serotyping? could we have been serotyping? could you have been serotyping? could they have been serotyping?

Interro-negative form

Simple form	V-ing form
could I not serotype? could you not serotype? could he not serotype? could we not serotype? could you not serotype? could they not serotype?	could I not be serotyping? could you not be serotyping? could he not be serotyping? could we not be serotyping? could you not be serotyping? could they not be serotyping?
Perfect	V-ing perfect
could I not have serotyped? could you not have serotyped? could he not have serotyped? could we not have serotyped? could you not have serotyped? could they not have serotyped?	could I not have been serotyping? could you not have been serotyping? could he not have been serotyping? could we not have been serotyping? could you not have been serotyping? could they not have been serotyping?