Please help!

I made an oa design using the DoE package of R.Then, I created the 18 blocks containing 4 choice sets and converted these into questionnaire form using rotation method of the CE support package.However,some of the alternatives in the choice sets are infeasible/unrealistic and dominant (but no attribute attribute overlapping)

Is there a way to deal with these using R?(such that the statistical properties of the design are minimallly modified). If can't be done using R, can you please help me on the best way to deal with these problems?

Thank you very much for your help.


Jonson M. Javier
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