import re
strings = ["AAA_POERAS::ZNCDAd_EROS_NOW_X_SHRIAPP_Z_DONTKNOW_J1_Z_SUITS_8907_11",
"BBB_POERAS::ZNCDAd_EROS_NOW_Q_SHRIAPP67_Y_DONTKNOW_J2_Y_THERE_MLA_WHICH_8906_86_25_01"]
for string in strings:
    print(re.sub(r'(\_\d{1,2})+$', '', string))