x1 = Cbl
x2 = Grb2
x3 = CG
x4 = Tyr
x5 = Ub
x6 = TyrNorm
x7 = UbNorm
x8 = EGFR_00UU
x9 = EGFR_10UU
x10 = EGFR_10CU
x11 = EGFR_10LU
x12 = EGFR_01UU
x13 = EGFR_01UG
x14 = EGFR_01UL
x15 = EGFR_11UU
x16 = EGFR_11CU
x17 = EGFR_11LU
x18 = EGFR_11UG
x19 = EGFR_11UL
x20 = EGFR_11CG
x21 = EGFR_11CC
x22 = EGFR_11LG
x23 = EGFR_02UU
x24 = EGFR_02UG
x25 = EGFR_02UL
x26 = EGFR_12UU
x27 = EGFR_12CU
x28 = EGFR_12LU
x29 = EGFR_12UG
x30 = EGFR_12UL
x31 = EGFR_12CG
x32 = EGFR_12CC
x33 = EGFR_12LG