user: Translate the below assembly code into C programming language:

```asm
<do_phone_number_letters>:
  endbr64
  push   %r15
  mov    %rdx,%r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x78,%rsp
  cmpb   $0x0,(%rdx)
  mov    %esi,0x64(%rsp)
  je     L218
  movslq 0x64(%rsp),%rsi
  lea    0x8(%rdx),%rdx
  movl   $0x0,0x60(%rsp)
  movzbl (%rdi),%eax
  sub    %rsi,%rdx
  mov    %rsi,0x28(%rsp)
  mov    %rdx,0x30(%rsp)
  mov    %r15,%rdx
  mov    %rdi,%r15
  mov    %rdx,%r14
L7:
  sub    $0x30,%eax
  mov    0x60(%rsp),%esi
  movsbl %al,%edi
  call   <get_char_key@plt>
  cmpb   $0x0,0x1(%r14)
  mov    %al,(%r14)
  je     L178
  lea    0x2(%r14),%rdx
  movl   $0x0,0x44(%rsp)
  movzbl 0x1(%r15),%eax
  mov    %rdx,0x68(%rsp)
  mov    %r14,%rdx
  mov    %r15,%r14
  mov    %rdx,%r15
L197:
  sub    $0x30,%eax
  mov    0x44(%rsp),%esi
  movsbl %al,%edi
  call   <get_char_key@plt>
  cmpb   $0x0,0x2(%r15)
  mov    %al,0x1(%r15)
  je     L193
  lea    0x3(%r15),%rsi
  movl   $0x0,0x40(%rsp)
  movzbl 0x2(%r14),%eax
  mov    %rsi,0x58(%rsp)
  mov    %r15,%rsi
  mov    %r14,%r15
  mov    %rsi,%r14
L172:
  sub    $0x30,%eax
  mov    0x40(%rsp),%esi
  movsbl %al,%edi
  call   <get_char_key@plt>
  cmpb   $0x0,0x3(%r14)
  mov    %al,0x2(%r14)
  je     L343
  lea    0x4(%r14),%rsi
  movl   $0x0,0x1c(%rsp)
  movzbl 0x3(%r15),%eax
  mov    %rsi,0x50(%rsp)
  mov    %r14,%rsi
  mov    %r15,%r14
  mov    %rsi,%r15
L271:
  sub    $0x30,%eax
  mov    0x1c(%rsp),%esi
  movsbl %al,%edi
  call   <get_char_key@plt>
  cmpb   $0x0,0x4(%r15)
  mov    %al,0x3(%r15)
  je     L298
  lea    0x5(%r15),%rdx
  movl   $0x0,0x18(%rsp)
  movzbl 0x4(%r14),%eax
  mov    %r15,%r13
  mov    %rdx,0x48(%rsp)
L6:
  lea    -0x30(%rax),%edi
  mov    0x18(%rsp),%esi
  movsbl %dil,%edi
  call   <get_char_key@plt>
  cmpb   $0x0,0x5(%r13)
  mov    %al,0x4(%r13)
  je     L217
  lea    0x6(%r13),%rsi
  movzbl 0x5(%r14),%eax
  xor    %ebp,%ebp
  mov    %rsi,0x38(%rsp)
L54:
  lea    -0x30(%rax),%edi
  mov    %ebp,%esi
  movsbl %dil,%edi
  call   <get_char_key@plt>
  cmpb   $0x0,0x6(%r13)
  mov    %al,0x5(%r13)
  je     L122
  lea    0x7(%r13),%rdx
  movzbl 0x6(%r14),%eax
  xor    %ebx,%ebx
  mov    %r13,%r15
  mov    %rdx,0x20(%rsp)
L310:
  lea    -0x30(%rax),%edi
  mov    %ebx,%esi
  movsbl %dil,%edi
  call   <get_char_key@plt>
  cmpb   $0x0,0x7(%r15)
  mov    %al,0x6(%r15)
  je     L186
  lea    0x9(%r15),%rsi
  movzbl 0x7(%r14),%eax
  xor    %r13d,%r13d
  lea    D2(%rip),%r12
  mov    %rsi,0x10(%rsp)
L8:
  lea    -0x30(%rax),%edi
  mov    %r13d,%esi
  movsbl %dil,%edi
  call   <get_char_key@plt>
  cmpb   $0x0,0x8(%r15)
  mov    %al,0x7(%r15)
  je     L89
  movzbl 0x8(%r14),%eax
  lea    0x9(%r14),%r8
  xor    %ecx,%ecx
L36:
  sub    $0x30,%eax
  mov    %ecx,%esi
  mov    %r8,(%rsp)
  movsbl %al,%edi
  mov    %ecx,0xc(%rsp)
  call   <get_char_key@plt>
  mov    0x10(%rsp),%rdx
  mov    0x64(%rsp),%esi
  mov    %al,0x8(%r15)
  mov    (%rsp),%rdi
  call   <do_phone_number_letters>
  movzbl 0x8(%r14),%eax
  lea    -0x30(%rax),%edx
  cmp    $0x1,%dl
  jbe    L5
  mov    0xc(%rsp),%ecx
  mov    (%rsp),%r8
  add    $0x1,%ecx
  cmp    $0x3,%ecx
  jne    L36
L5:
  movzbl 0x7(%r14),%eax
  lea    -0x30(%rax),%edx
  cmp    $0x1,%dl
  jbe    L326
  add    $0x1,%r13d
  cmp    $0x3,%r13d
  jne    L8
L326:
  movzbl 0x6(%r14),%eax
  lea    -0x30(%rax),%edx
  cmp    $0x1,%dl
  jbe    L281
  add    $0x1,%ebx
  cmp    $0x3,%ebx
  jne    L310
L281:
  mov    %r15,%r13
L77:
  movzbl 0x5(%r14),%eax
  lea    -0x30(%rax),%edx
  cmp    $0x1,%dl
  jbe    L106
  add    $0x1,%ebp
  cmp    $0x3,%ebp
  jne    L54
L106:
  movzbl 0x4(%r14),%eax
  lea    -0x30(%rax),%edx
  cmp    $0x1,%dl
  jbe    L56
  addl   $0x1,0x18(%rsp)
  mov    0x18(%rsp),%esi
  cmp    $0x3,%esi
  jne    L6
L56:
  mov    %r13,%r15
L164:
  movzbl 0x3(%r14),%eax
  lea    -0x30(%rax),%edx
  cmp    $0x1,%dl
  jbe    L165
  addl   $0x1,0x1c(%rsp)
  mov    0x1c(%rsp),%edx
  cmp    $0x3,%edx
  jne    L271
L165:
  mov    %r15,%rax
  mov    %r14,%r15
  mov    %rax,%r14
L155:
  movzbl 0x2(%r15),%eax
  lea    -0x30(%rax),%edx
  cmp    $0x1,%dl
  jbe    L220
  addl   $0x1,0x40(%rsp)
  mov    0x40(%rsp),%edx
  cmp    $0x3,%edx
  jne    L172
L220:
  mov    %r14,%rax
  mov    %r15,%r14
  mov    %rax,%r15
L342:
  movzbl 0x1(%r14),%eax
  lea    -0x30(%rax),%edx
  cmp    $0x1,%dl
  jbe    L322
  addl   $0x1,0x44(%rsp)
  mov    0x44(%rsp),%edx
  cmp    $0x3,%edx
  jne    L197
L322:
  mov    %r15,%rax
  mov    %r14,%r15
  mov    %rax,%r14
L205:
  movzbl (%r15),%eax
  lea    -0x30(%rax),%edx
  cmp    $0x1,%dl
  jbe    L35
  addl   $0x1,0x60(%rsp)
  mov    0x60(%rsp),%edx
  cmp    $0x3,%edx
  jne    L7
L35:
  add    $0x78,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   (%rax)
L89:
  mov    0x30(%rsp),%rsi
  mov    %r12,%rdi
  call   <printf@plt>
  jmp    L5
  nopw   0x0(%rax,%rax,1)
L186:
  mov    0x20(%rsp),%rsi
  lea    D2(%rip),%rdi
  sub    0x28(%rsp),%rsi
  call   <printf@plt>
  jmp    L326
  nopl   0x0(%rax,%rax,1)
L122:
  mov    0x38(%rsp),%rsi
  lea    D2(%rip),%rdi
  sub    0x28(%rsp),%rsi
  call   <printf@plt>
  jmp    L77
  nopl   0x0(%rax,%rax,1)
L217:
  mov    0x48(%rsp),%rsi
  lea    D2(%rip),%rdi
  sub    0x28(%rsp),%rsi
  call   <printf@plt>
  jmp    L106
L298:
  mov    0x50(%rsp),%rsi
  lea    D2(%rip),%rdi
  sub    0x28(%rsp),%rsi
  call   <printf@plt>
  jmp    L164
L343:
  mov    0x58(%rsp),%rsi
  lea    D2(%rip),%rdi
  sub    0x28(%rsp),%rsi
  call   <printf@plt>
  jmp    L155
L193:
  mov    0x68(%rsp),%rsi
  lea    D2(%rip),%rdi
  sub    0x28(%rsp),%rsi
  call   <printf@plt>
  jmp    L342
L178:
  mov    %r14,%rax
  sub    0x28(%rsp),%rax
  lea    D2(%rip),%rdi
  lea    0x1(%rax),%rsi
  call   <printf@plt>
  jmp    L205
L218:
  add    $0x78,%rsp
  movslq %esi,%rax
  mov    %rdx,%rsi
  pop    %rbx
  sub    %rax,%rsi
  lea    D2(%rip),%rdi
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1070 <printf@plt>
```

tool_calls: name: read_data
arguments: data_label: D2
type_infered: string

tool: D2: %s


assistant: ```c
void do_phone_number_letters(char *number, int len, char *buffer) {
  if (*buffer == '\0') {
    printf("%s\n", buffer - len);
    return;
  }
  for (int i = 0; i < 3; i++) {
    buffer[0] = get_char_key(number[0] - '0', i);
    do_phone_number_letters(number + 1, len, buffer + 1);
    if (number[0] == '0' || number[0] == '1') {
      return;
    }
  }
}
```