English verb conjugation
COULD DEMYSTIFY

Regular verb: demystify - demystified - demystified

Affirmation

Simple form	V-ing form
I could demystify you could demystify he could demystify we could demystify you could demystify they could demystify	I could be demystifying you could be demystifying he could be demystifying we could be demystifying you could be demystifying they could be demystifying
Perfect	V-ing perfect
I could have demystified you could have demystified he could have demystified we could have demystified you could have demystified they could have demystified	I could have been demystifying you could have been demystifying he could have been demystifying we could have been demystifying you could have been demystifying they could have been demystifying

Negation

Simple form	V-ing form
I couldn't demystify you couldn't demystify he couldn't demystify we couldn't demystify you couldn't demystify they couldn't demystify	I couldn't be demystifying you couldn't be demystifying he couldn't be demystifying we couldn't be demystifying you couldn't be demystifying they couldn't be demystifying
Perfect	V-ing perfect
I couldn't have demystified you couldn't have demystified he couldn't have demystified we couldn't have demystified you couldn't have demystified they couldn't have demystified	I couldn't have been demystifying you couldn't have been demystifying he couldn't have been demystifying we couldn't have been demystifying you couldn't have been demystifying they couldn't have been demystifying

Interrogative form

Simple form	V-ing form
could I demystify? could you demystify? could he demystify? could we demystify? could you demystify? could they demystify?	could I be demystifying? could you be demystifying? could he be demystifying? could we be demystifying? could you be demystifying? could they be demystifying?
Perfect	V-ing perfect
could I have demystified? could you have demystified? could he have demystified? could we have demystified? could you have demystified? could they have demystified?	could I have been demystifying? could you have been demystifying? could he have been demystifying? could we have been demystifying? could you have been demystifying? could they have been demystifying?

Interro-negative form

Simple form	V-ing form
couldn't I demystify? couldn't you demystify? couldn't he demystify? couldn't we demystify? couldn't you demystify? couldn't they demystify?	couldn't I be demystifying? couldn't you be demystifying? couldn't he be demystifying? couldn't we be demystifying? couldn't you be demystifying? couldn't they be demystifying?
Perfect	V-ing perfect
couldn't I have demystified? couldn't you have demystified? couldn't he have demystified? couldn't we have demystified? couldn't you have demystified? couldn't they have demystified?	couldn't I have been demystifying? couldn't you have been demystifying? couldn't he have been demystifying? couldn't we have been demystifying? couldn't you have been demystifying? couldn't they have been demystifying?