user: Demonstrate the C code that generates the assembly output below:

```asm
<rewrite_align>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %rdi,-0x38(%rbp)
  mov    %rsi,-0x40(%rbp)
  lea    D52(%rip),%rax
  mov    %rax,%rdi
  call   <fsm_symbol@plt>
  mov    %eax,%edi
  call   <fsm_kleene_star@plt>
  mov    %eax,%edx
  mov    -0x38(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <fsm_concat@plt>
  mov    $0x2,%ecx
  mov    $0x1,%edx
  mov    $0x1,%esi
  mov    %eax,%edi
  call   <rewrite_tape_m_to_n_of_k@plt>
  mov    %rax,%rdi
  call   <fsm_minimize@plt>
  mov    %rax,-0x28(%rbp)
  lea    D52(%rip),%rax
  mov    %rax,%rdi
  call   <fsm_symbol@plt>
  mov    %eax,%edi
  call   <fsm_kleene_star@plt>
  mov    %eax,%edx
  mov    -0x40(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <fsm_concat@plt>
  mov    $0x2,%ecx
  mov    $0x2,%edx
  mov    $0x2,%esi
  mov    %eax,%edi
  call   <rewrite_tape_m_to_n_of_k@plt>
  mov    %rax,%rdi
  call   <fsm_minimize@plt>
  mov    %rax,-0x20(%rbp)
  mov    $0x0,%edx
  mov    $0x0,%esi
  lea    D2(%rip),%rax
  mov    %rax,%rdi
  call   <fsm_parse_regex@plt>
  mov    %rax,%rdi
  call   <fsm_minimize@plt>
  mov    %rax,-0x18(%rbp)
  mov    -0x20(%rbp),%rdx
  mov    -0x28(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <fsm_intersect@plt>
  mov    %rax,%rdx
  mov    -0x18(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <fsm_intersect@plt>
  mov    %rax,%rdi
  call   <fsm_minimize@plt>
  mov    %rax,-0x10(%rbp)
  mov    -0x10(%rbp),%rax
  lea    D12(%rip),%rdx
  lea    D53(%rip),%rcx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <fsm_substitute_symbol@plt>
  mov    %rax,%rdi
  call   <fsm_minimize@plt>
  mov    %rax,-0x10(%rbp)
  mov    $0x0,%edx
  mov    $0x0,%esi
  lea    D55(%rip),%rax
  mov    %rax,%rdi
  call   <fsm_parse_regex@plt>
  mov    %rax,%rdx
  mov    -0x10(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <fsm_compose@plt>
  mov    %eax,%edi
  call   <fsm_lower@plt>
  mov    %rax,%rdi
  call   <fsm_minimize@plt>
  mov    %rax,-0x8(%rbp)
  mov    -0x8(%rbp),%rax
  lea    D53(%rip),%rdx
  lea    D12(%rip),%rcx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <fsm_substitute_symbol@plt>
  mov    %rax,%rdi
  call   <fsm_minimize@plt>
  mov    %rax,-0x8(%rbp)
  mov    -0x8(%rbp),%rax
  leave
  ret
```

tool_calls: name: parse_data
arguments: data_tag: D52
datatype: string
name: parse_data
arguments: data_tag: D2
datatype: string
name: parse_data
arguments: data_tag: D12
datatype: string
name: parse_data
arguments: data_tag: D53
datatype: string
name: parse_data
arguments: data_tag: D55
datatype: string

tool: D52: @0@

tool: D2: ~[[? ?]* "@0@" "@0@" [? ?]*]

tool: D12: @UNK@

tool: D53: @_IDENTITY_SYMBOL_@

tool: D55: [? ? | "@UNK@" "@UNK@":"@ID@" ]*

assistant: ```c
struct fsm *rewrite_align(struct fsm *upper, struct fsm *lower) {
  struct fsm *first, *second, *third, *align, *align2;
  first = fsm_minimize(rewrite_tape_m_to_n_of_k(fsm_concat(upper, fsm_kleene_star(fsm_symbol("@0@"))), 1, 1, 2));
  second = fsm_minimize(rewrite_tape_m_to_n_of_k(fsm_concat(lower, fsm_kleene_star(fsm_symbol("@0@"))), 2, 2, 2));
  third = fsm_minimize(fsm_parse_regex("~[[? ?]* \"@0@\" \"@0@\" [? ?]*]", NULL, NULL));
  align = fsm_minimize(fsm_intersect(third, fsm_intersect(first, second)));
  align = fsm_minimize(fsm_substitute_symbol(align, "@_IDENTITY_SYMBOL_@", "@UNK@"));
  align2 = fsm_minimize(fsm_lower(fsm_compose(align, fsm_parse_regex("[? ? | \"@UNK@\" \"@UNK@\":\"@ID@\" ]*", NULL, NULL))));
  align2 = fsm_minimize(fsm_substitute_symbol(align2, "@UNK@", "@_IDENTITY_SYMBOL_@"));
  return align2;
}
```