opcodes = set()
functions = set()
for insn in DATABASE:
    if insn.ppc.opcode.value in (34, 35, 50, 51, 48, 49, 42, 43, 40, 41, 32, 33, 58):
        opcodes.add(insn.name)
    if insn.ppc.unit is _Function.LDST:
        functions.add(insn.name)