x1 = NFkB
x2 = IKKIkBa
x3 = IKKIkBaNFkB
x4 = IKK
x5 = IkBa
x6 = IKKIkBb
x7 = IKKIkBbNFkB
x8 = IkBb
x9 = IKKIkBe
x10 = IKKIkBeNFkB
x11 = IkBe
x12 = IkBaNFkB
x13 = IkBbNFkB
x14 = IkBeNFkB
x15 = source
x16 = IkBat
x17 = sink
x18 = NFkBn
x19 = IkBan
x20 = IkBanNFkBn
x21 = IkBbn
x22 = IkBbnNFkBn
x23 = IkBbt
x24 = IkBen
x25 = IkBenNFkBn
x26 = IkBet