The order of solving these AMPL models are: 
	rolling1, rolling 2, rolling3, rolling11, rolling12, rolling21, rolling22, rolling 23.

The correspondence between the AMPL models and the final solution x is:
	rolling1: x_2^1, x_2^2
	rolling2: x_2^3, x_2^4
	rolling3: x_2^5, x_3^5, x_4^5, x_5^5,
	rolling11: x_3^1, x_4^1, x_5^1
	rolling12: x_3^2, x_4^2, x_5^2
	rolling21: x_3^3, x_3^4
	rolling22: x_4^3, x_5^3
	rolling 23: x_4^4, x_5^4

Note that x_1=69 by solving SPLS.

