I could beautify you could beautify he could beautify we could beautify you could beautify they could beautify
Forme en V-ing
I could be beautifying you could be beautifying he could be beautifying we could be beautifying you could be beautifying they could be beautifying
Perfect
I could have beautified you could have beautified he could have beautified we could have beautified you could have beautified they could have beautified
Perfect en V-ing
I could have been beautifying you could have been beautifying he could have been beautifying we could have been beautifying you could have been beautifying they could have been beautifying
Négation
Forme simple
I could not beautify you could not beautify he could not beautify we could not beautify you could not beautify they could not beautify
Forme en V-ing
I could not be beautifying you could not be beautifying he could not be beautifying we could not be beautifying you could not be beautifying they could not be beautifying
Perfect
I could not have beautified you could not have beautified he could not have beautified we could not have beautified you could not have beautified they could not have beautified
Perfect en V-ing
I could not have been beautifying you could not have been beautifying he could not have been beautifying we could not have been beautifying you could not have been beautifying they could not have been beautifying
Forme interrogative
Forme simple
could I beautify? could you beautify? could he beautify? could we beautify? could you beautify? could they beautify?
Forme en V-ing
could I be beautifying? could you be beautifying? could he be beautifying? could we be beautifying? could you be beautifying? could they be beautifying?
Perfect
could I have beautified? could you have beautified? could he have beautified? could we have beautified? could you have beautified? could they have beautified?
Perfect en V-ing
could I have been beautifying? could you have been beautifying? could he have been beautifying? could we have been beautifying? could you have been beautifying? could they have been beautifying?
Forme interro-négative
Forme simple
could I not beautify? could you not beautify? could he not beautify? could we not beautify? could you not beautify? could they not beautify?
Forme en V-ing
could I not be beautifying? could you not be beautifying? could he not be beautifying? could we not be beautifying? could you not be beautifying? could they not be beautifying?
Perfect
could I not have beautified? could you not have beautified? could he not have beautified? could we not have beautified? could you not have beautified? could they not have beautified?
Perfect en V-ing
could I not have been beautifying? could you not have been beautifying? could he not have been beautifying? could we not have been beautifying? could you not have been beautifying? could they not have been beautifying?