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.4^12+12*.6*.4^(11)+66(.6)^2*.4^10+220*.6^3*.4^9+495*.6^4*.4^8+792*.6^5*.4^7
.4^12+12*.6*.4^(11)+66(.6)^2*.4^10+220*.6^3*.4^9+495*.6^4*.4^8+792*.6^5*.4^7
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