English verb conjugation
COULD SEQUENCE

Regular verb: sequence - sequenced - sequenced

Affirmation

Simple form	V-ing form
I could sequence you could sequence she could sequence we could sequence you could sequence they could sequence	I could be sequencing you could be sequencing she could be sequencing we could be sequencing you could be sequencing they could be sequencing
Perfect	V-ing perfect
I could have sequenced you could have sequenced she could have sequenced we could have sequenced you could have sequenced they could have sequenced	I could have been sequencing you could have been sequencing she could have been sequencing we could have been sequencing you could have been sequencing they could have been sequencing

Negation

Simple form	V-ing form
I could not sequence you could not sequence she could not sequence we could not sequence you could not sequence they could not sequence	I could not be sequencing you could not be sequencing she could not be sequencing we could not be sequencing you could not be sequencing they could not be sequencing
Perfect	V-ing perfect
I could not have sequenced you could not have sequenced she could not have sequenced we could not have sequenced you could not have sequenced they could not have sequenced	I could not have been sequencing you could not have been sequencing she could not have been sequencing we could not have been sequencing you could not have been sequencing they could not have been sequencing

Interrogative form

Simple form	V-ing form
could I sequence? could you sequence? could she sequence? could we sequence? could you sequence? could they sequence?	could I be sequencing? could you be sequencing? could she be sequencing? could we be sequencing? could you be sequencing? could they be sequencing?
Perfect	V-ing perfect
could I have sequenced? could you have sequenced? could she have sequenced? could we have sequenced? could you have sequenced? could they have sequenced?	could I have been sequencing? could you have been sequencing? could she have been sequencing? could we have been sequencing? could you have been sequencing? could they have been sequencing?

Interro-negative form

Simple form	V-ing form
could I not sequence? could you not sequence? could she not sequence? could we not sequence? could you not sequence? could they not sequence?	could I not be sequencing? could you not be sequencing? could she not be sequencing? could we not be sequencing? could you not be sequencing? could they not be sequencing?
Perfect	V-ing perfect
could I not have sequenced? could you not have sequenced? could she not have sequenced? could we not have sequenced? could you not have sequenced? could they not have sequenced?	could I not have been sequencing? could you not have been sequencing? could she not have been sequencing? could we not have been sequencing? could you not have been sequencing? could they not have been sequencing?