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Payments to secured creditors do not generally qualify for preferential treatment status. You would have to pre-pay your secured debts for them to be treated as preferential payments. (For instance, if you paid 6 months of mortgage payments in advance, that could be treated as a preference.)
The same applies to everyday living expenses. Paying everyday living expenses cannot be preferential payments, which can only be for pre-existing debt, not for things (goods and services) that you pay for as you receive them.