(gdb) p grammar->single_tags_list
$2 = std::vector of length 22, capacity 32 = {0x482a80, 0x482cd0, 0x482e80, 0x4831d0, 0x4833a0, 0x483560, 0x483a90, 0x484030, 0x482f80, 0x48c5d0, 0x48c770, 0x48c900, 0x48ca90, 0x48cc20, 0x48cdb0, 0x48d030, 0x48d5d0, 0x48c540, 0x4841c0,
  0x48daa0, 0x48dd90, 0x48eaa0}
(gdb) p grammar->single_tags
$3 = {size_ = 31, deleted = 0, elements = std::vector of length 128, capacity 128 = {{first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 303731003, second = 0x7fffec001630}, {first = 4294967295,
      second = 0x0}, {first = 4294967295, second = 0x0}, {first = 3799806850, second = 0x484030}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 2916571615,
      second = 0x483560}, {first = 2631671459, second = 0x48dd90}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 3519211991, second = 0x7fffec001b30}, {
      first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4074298014, second = 0x7fffec0041b0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {
      first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {
      first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {
      first = 4294967295, second = 0x0}, {first = 2006342176, second = 0x7fffec0023f0}, {first = 4294967295, second = 0x0}, {first = 3301907058, second = 0x48eaa0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0},
    {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 287581654, second = 0x48daa0}, {first = 4294967295, second = 0x0}, {first = 1322189872, second = 0x48c900}, {first = 4294967295, second = 0x0}, {
      first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4148738219, second = 0x48cc20}, {
      first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 397286898, second = 0x48c540}, {first = 3623128671, second = 0x7fffec002da0}, {first = 1192442572, second = 0x482e80}, {first = 4294967295,
      second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 0, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {
      first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 1312630139, second = 0x482a80}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {
      first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {
      first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 3147714673, second = 0x7fffec0018e0}, {
      first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 3353618559, second = 0x7fffec003670}, {
      first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4154473248, second = 0x7ffff7a03b20 <main_arena+96>}, {first = 4294967295,
      second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0},
    {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {
      first = 561406870, second = 0x4833a0}, {first = 2521712899, second = 0x48cdb0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {
      first = 4290125348, second = 0x3e90fef2076d4d33}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {
      first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {
      first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 4294967295, second = 0x0}, {first = 1296418932, second = 0x48c770}}}