$(20$ points$)$ A message can be represented as a string of ASCII characters, one per memory location, in consecutive memory locations. Bits $[15$:$8]$ of each location contain $0,$ and the location immediately following the string contains $x0000.$ The following program encrypt the message starting at $x4000$ by adding $5$ to each character and storing the resulting message at $x5000.$ However, there are four bugs in the program. Please find out these bugs and fix them. $($Please interpret each machine code first. Directly writing the final answers will receive zero points.$)$

$\backslash$table$[[$x$3000,1110,0000,0000,1010],[$x$3001,0010,0010,0000,1010],[$x$3002,0110,0100,0000,0000],[$x$3003,0000,1110,0000,0101],[$x$3004,0001,0100,1010,0101],[$x$3005,011,0100,0100,0000],[$x$3006,0001,0000,0010,0001],[$x$3007,000,0010,0110,0001],[$x$3008,0000,1001,1111,1001],[$x$3009,0110,0100,0100,0000],[$x$300,111,0000,0010,0101],[$x$300$B$,0100,0000,0000,0000],[$x$300$C$,0101,0000,0000,0000]]$