\frac{R_{P K}}{R_{K R}} \approx 2, \frac{R_{R P}}{R_{P K}} \approx 2, \frac{R_{R P}}{R_{K P}} \approx 4.

${\frac{R_{PK}}{R_{KR}} \approx 2, \frac{R_{RP}}{R_{PK}} \approx 2, \frac{R_{RP}}{R_{KP}} \approx 4.}$

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