RT_1 RS_1 R_1 theta_1 RS_1 R_1 RS_1 aD_1 k_1 GF_1 1 k_1 GF_1 pE_1 RS_1 E_1 qE_1 RS_1 E_1 dE_1 X_1 E_1 dX_1 X_1 aX_1 E_1 f_1 E2F_1 g_1 X_1 2 E_1 dD_1 E_1 D_1 aE_1 1 af_1 E2F_1 pS_1 E2F_1 R_1 pD_1 RS_1 D_1 qD_1 RS_1 D_1 pX_1 RP_1 X_1 qX_1 RP_1 X_1