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fp coeff_I_0_0_0, coeff_I_p1_0_0, coeff_I_0_p1_0, coeff_I_p1_p1_0, coeff_I_0_0_p1, coeff_I_p1_0_p1, coeff_I_0_p1_p1, coeff_I_p1_p1_p1;