user: What would the C source look like for the assembly code provided here:

```asm
<mat_copier>:
  endbr64
  push   %r15
  push   %r14
  mov    %esi,%r14d
  push   %r13
  push   %r12
  mov    %rdi,%r12
  lea    0x0(,%rsi,8),%edi
  push   %rbp
  push   %rbx
  sub    $0x78,%rsp
  call   <malloc@plt>
  mov    %rax,0x68(%rsp)
  test   %r14d,%r14d
  jle    L1
  mov    %rax,%rbx
  mov    %rax,%r13
  lea    -0x1(%r14),%eax
  mov    %r14d,%ebp
  mov    %eax,0x14(%rsp)
  mov    %r14d,%eax
  shr    $0x3,%ebp
  lea    (%rbx,%rax,8),%rax
  mov    %r14d,%ebx
  and    $0xfffffff8,%ebx
  mov    %rax,0x8(%rsp)
  lea    0x1(%rbx),%esi
  mov    %ebx,%eax
  lea    0x2(%rbx),%ecx
  mov    %ebx,0x20(%rsp)
  mov    %rax,0x18(%rsp)
  mov    %rsi,%rax
  lea    0x6(%rbx),%edx
  movslq %ebx,%r15
  mov    %rsi,0x28(%rsp)
  lea    0x3(%rbx),%esi
  mov    %ecx,0x24(%rsp)
  mov    %rcx,0x30(%rsp)
  lea    0x4(%rbx),%ecx
  mov    %esi,0x38(%rsp)
  mov    %rsi,0x40(%rsp)
  lea    0x5(%rbx),%esi
  mov    %eax,%ebx
  mov    %r14d,%eax
  mov    %ecx,0x3c(%rsp)
  mov    %r12,%r14
  mov    %eax,%r12d
  mov    %rcx,0x48(%rsp)
  mov    %esi,0x50(%rsp)
  mov    %rsi,0x58(%rsp)
  mov    %edx,0x54(%rsp)
  mov    %rdx,0x60(%rsp)
  nopl   0x0(%rax,%rax,1)
L190:
  mov    %r12d,%edi
  call   <malloc@plt>
  lea    0x1(%r14),%r8
  mov    %rax,%rdi
  sub    %r8,%rdi
  cmp    $0x6,%rdi
  jbe    L20
  cmpl   $0x6,0x14(%rsp)
  jbe    L20
  mov    (%r14),%rdi
  mov    %rdi,(%rax)
  lea    0x8(%rax),%rdi
  cmp    $0x1,%ebp
  jbe    L200
  mov    %r14,%r9
  mov    $0x1,%r8d
  sub    %rax,%r9
L220:
  mov    (%rdi,%r9,1),%rdx
  add    $0x1,%r8d
  add    $0x8,%rdi
  mov    %rdx,-0x8(%rdi)
  cmp    %r8d,%ebp
  jne    L220
L200:
  cmp    %r12d,0x20(%rsp)
  je     L182
  movzbl (%r14,%r15,1),%edi
  mov    0x18(%rsp),%rsi
  mov    %dil,(%rax,%rsi,1)
  cmp    %ebx,%r12d
  jle    L182
  movslq %ebx,%rdi
  mov    0x28(%rsp),%rsi
  movzbl (%r14,%rdi,1),%edi
  mov    %dil,(%rax,%rsi,1)
  mov    0x24(%rsp),%esi
  cmp    %esi,%r12d
  jle    L182
  movslq %esi,%rdi
  mov    0x38(%rsp),%ecx
  mov    0x30(%rsp),%rsi
  movzbl (%r14,%rdi,1),%edi
  mov    %dil,(%rax,%rsi,1)
  cmp    %ecx,%r12d
  jle    L182
  movslq %ecx,%rdi
  mov    0x40(%rsp),%rsi
  mov    0x3c(%rsp),%edx
  movzbl (%r14,%rdi,1),%edi
  mov    %dil,(%rax,%rsi,1)
  cmp    %edx,%r12d
  jle    L182
  movslq %edx,%rdi
  mov    0x48(%rsp),%rcx
  movzbl (%r14,%rdi,1),%edi
  mov    %dil,(%rax,%rcx,1)
  mov    0x50(%rsp),%ecx
  cmp    %ecx,%r12d
  jle    L182
  movslq %ecx,%rdi
  mov    0x58(%rsp),%rdx
  movzbl (%r14,%rdi,1),%edi
  mov    %dil,(%rax,%rdx,1)
  mov    0x54(%rsp),%edx
  cmp    %edx,%r12d
  jle    L182
  movslq %edx,%rdi
  mov    0x60(%rsp),%rsi
  movzbl (%r14,%rdi,1),%edi
  mov    %dil,(%rax,%rsi,1)
L182:
  mov    %rax,0x0(%r13)
  add    $0xb,%r14
  add    $0x8,%r13
  cmp    %r13,0x8(%rsp)
  jne    L190
L1:
  mov    0x68(%rsp),%rax
  add    $0x78,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopw   0x0(%rax,%rax,1)
L20:
  movzbl (%r14),%edi
  mov    %dil,(%rax)
  cmp    $0x1,%r12d
  je     L182
  movzbl 0x1(%r14),%edi
  mov    %dil,0x1(%rax)
  cmp    $0x2,%r12d
  je     L182
  movzbl 0x2(%r14),%edi
  mov    %dil,0x2(%rax)
  cmp    $0x3,%r12d
  je     L182
  movzbl 0x3(%r14),%edi
  mov    %dil,0x3(%rax)
  cmp    $0x4,%r12d
  je     L182
  movzbl 0x4(%r14),%edi
  mov    %dil,0x4(%rax)
  cmp    $0x5,%r12d
  je     L182
  movzbl 0x5(%r14),%edi
  mov    %dil,0x5(%rax)
  cmp    $0x6,%r12d
  je     L182
  movzbl 0x6(%r14),%edi
  mov    %dil,0x6(%rax)
  cmp    $0x7,%r12d
  je     L182
  movzbl 0x7(%r14),%edi
  mov    %dil,0x7(%rax)
  cmp    $0x8,%r12d
  je     L182
  movzbl 0x8(%r14),%edi
  mov    %dil,0x8(%rax)
  cmp    $0x9,%r12d
  je     L182
  movzbl 0x9(%r14),%edi
  mov    %dil,0x9(%rax)
  cmp    $0xa,%r12d
  je     L182
  movzbl 0xa(%r14),%edi
  mov    %dil,0xa(%rax)
  cmp    $0xb,%r12d
  je     L182
  movzbl 0xb(%r14),%edi
  mov    %dil,0xb(%rax)
  cmp    $0xc,%r12d
  je     L182
  mov    $0xc,%edi
L196:
  movzbl (%r14,%rdi,1),%edx
  mov    %dl,(%rax,%rdi,1)
  add    $0x1,%rdi
  cmp    %edi,%r12d
  jg     L196
  jmp    L182
```

assistant: ```c
char **mat_copier(char grid[][11], int n) {
  int i, j;
  char **p;
  char *tem;
  p = (char **)malloc(sizeof(char *) * n);
  for (i = 0; i < n; ++i) {
    tem = (char *)malloc(sizeof(char) * n);
    for (j = 0; j < n; ++j) {
      tem[j] = grid[i][j];
    }
    p[i] = tem;
  }
  return p;
}
```