.model small
.stack 100H
.data
a db "$"
.code
main proc
    mov ax,@data
    mov ds, ax
    mov ah,9
    lea dx,A 
    int 21h
    
    mov ah,2
    mov dl,10 
    int 21h
    mov dl,13
    int 21h
    
    mov cx,1
    mov ah,2;
    mov dl,"1"
    
    level1:
    int 21h
    inc dl
    inc dl
    loop level1
    
    mov ah,2
    mov dl,10
    int 21h
    mov dl,13
    int 21h
    
    mov cx,2
    mov ah,2;
    mov dl,"1"
    
    level 2:
    int 21h
    inc dl
    inc dl
    loop level2
    
    mov ah,2
    mov dl,10
    int 21h
    mov dl,13
    int 21h
    
    mov cx,3
    mov ah,2;
    mov dl,"1"
    
    level3:
    int 21h
    inc dl
    inc dl
    loop level3
    
    mov ah,2
    mov dl,10
    int 21h
    mov dl,13
    int 21h
    
    mov cx,4
    mov ah,2;
    mov dl,"1"
    
    level4:
    int 21h
    inc dl
    inc dl 
    loop level4
    mov ah,2
    mov dl,10
    int 21h
    mov dl,13
    int 21h
    mov cx,5
    mov ah,2;
    mov dl "1"
    
    level5:
    int 21h
    inc dl
    inc dl
    loop level5
    
    exit:
    mov ah,4ch
    int 21h
    main Endp
end main