var P1 = "P1 crosses alone";
var P2 = "P2 crosses alone";
var P5 = "P5 crosses alone";
var P10 = "P10 crosses alone";
var P1P2 = "P1 crosses with P2";
var P1P5 = "P1 crosses with P5";
var P1P10 = "P1 crosses with P10";
var P2P5 = "P2 crosses with P5";
var P2P10 = "P2 crosses with P10";
var P5P10 = "P5 crosses with P10";