汇编高手请帮忙~！！不胜感激~！！

下列程序完成将键盘输入的两个字符串连接并分散对齐显示输出功能，补充并完成下列程序段，要求给程序添加必要注释，给出程序框图及程序的执行结果
       data segment
       dum    equ 60
       p1 db 0ah, 0dh, ‘string:’,’$’
       p2 db 0ah, 0dh,’right-adjusting of string:’,0ah, 0dh,’$’
       string1 db  num,0,num dup(‘’),0ah,0dh,’$’
       string2 db  num,0,num dup(‘’),0ah,0dh,’$’
       data ends
       stack1 segment para stack
            dw 20h dup(0)
       stack1ends
       code segment
            assume cs:code,ds:data,ss:stack1,es:data
       start:
      
      











code ends
        end    start