local list = { 1, 2, 3 } local pairs do local _accum_0 = { } local _len_0 = 1 for _index_0 = 1, #list do local i = list[_index_0] if i % 2 == 1 then for _index_1 = 1, #list do local j = list[_index_1] if j > i then _accum_0[_len_0] = tostring(i) .. "-" .. tostring(j) _len_0 = _len_0 + 1 end end end end pairs = _accum_0 end return print(table.concat(pairs, ","))