Thanks for the hint (fixed it). The 1st is actually the lock icon and then there are 4 following dynamic icons.
So the last entry with the "duplicate 4" should have been 4 and 5.
Code:
["filter_lockdyn_all"] = "Блoкиpoвкa / динамический 1 - 4",
["filter_lockdyn_1"] = "Блoкиpoвкa",
["filter_lockdyn_2"] = "1-й динамический",
["filter_lockdyn_3"] = "2-й динамический",
["filter_lockdyn_4"] = "3-й динамический",
["filter_lockdyn_5"] = "4-й динамический",
And many thanks for the translations!