set G1 = make lcg with 78,90,31,-9001. 
set G2 = make lcg with 87,9,13,9002. 
set G3 = make lcg with 77,96,-45,-900. 
set G4 = make lcg with 78,90,31,800. 

set G0 = make lcg with 0,0,0,1. 

set G5 = merge G1,G2 with %. 
set V = run G5 for 13 iter. 

set G6 = merge G1,G0 with %. 
set V2 = run G6 for 13 iter. 