x1 = GLCi
x2 = ATP
x3 = G6P
x4 = ADP
x5 = F6P
x6 = F16bP
x7 = F26bP
x8 = AMP
x9 = DHAP
x10 = GAP
x11 = NAD
x12 = BPG
x13 = NADH
x14 = P3G
x15 = P2G
x16 = PEP
x17 = PYR
x18 = PYRmito
x19 = AcAld
x20 = GLCo
x21 = CO2
x22 = EtOH
x23 = Glycerol
x24 = Glycogen
x25 = Trehalose
x26 = Succinate
x27 = AcCoA
x28 = CO2mito