English verb conjugation
COULD METHYLATE

Regular verb: methylate - methylated - methylated

Affirmation

Simple form	V-ing form
I could methylate you could methylate he could methylate we could methylate you could methylate they could methylate	I could be methylating you could be methylating he could be methylating we could be methylating you could be methylating they could be methylating
Perfect	V-ing perfect
I could have methylated you could have methylated he could have methylated we could have methylated you could have methylated they could have methylated	I could have been methylating you could have been methylating he could have been methylating we could have been methylating you could have been methylating they could have been methylating

Negation

Simple form	V-ing form
I could not methylate you could not methylate he could not methylate we could not methylate you could not methylate they could not methylate	I could not be methylating you could not be methylating he could not be methylating we could not be methylating you could not be methylating they could not be methylating
Perfect	V-ing perfect
I could not have methylated you could not have methylated he could not have methylated we could not have methylated you could not have methylated they could not have methylated	I could not have been methylating you could not have been methylating he could not have been methylating we could not have been methylating you could not have been methylating they could not have been methylating

Interrogative form

Simple form	V-ing form
could I methylate? could you methylate? could he methylate? could we methylate? could you methylate? could they methylate?	could I be methylating? could you be methylating? could he be methylating? could we be methylating? could you be methylating? could they be methylating?
Perfect	V-ing perfect
could I have methylated? could you have methylated? could he have methylated? could we have methylated? could you have methylated? could they have methylated?	could I have been methylating? could you have been methylating? could he have been methylating? could we have been methylating? could you have been methylating? could they have been methylating?

Interro-negative form

Simple form	V-ing form
could I not methylate? could you not methylate? could he not methylate? could we not methylate? could you not methylate? could they not methylate?	could I not be methylating? could you not be methylating? could he not be methylating? could we not be methylating? could you not be methylating? could they not be methylating?
Perfect	V-ing perfect
could I not have methylated? could you not have methylated? could he not have methylated? could we not have methylated? could you not have methylated? could they not have methylated?	could I not have been methylating? could you not have been methylating? could he not have been methylating? could we not have been methylating? could you not have been methylating? could they not have been methylating?