Contegration Test

[alim]

Hi Everyone

Happy New Year. I have 6 vatiables. 5 variables are I(1) and one variable I(2). How do I test Contegration A) All 6 variables considering 1st difference B) 5 variables considering 1st difference and one Variable 2nd fifference or C) All variables considering at level (Non-stationary)

I am looking your help.

With regard
Ali