org 100h

     EntryPoint:
                mov     ah, $0A
                mov     dx, bufInput
                int     21h

                mov    ah, 09
                mov    dx, newLine
                int    21h

                mov     ah, [bufInput+6]
                mov     al, [bufInput+5]

                mov     [bufInput+6], al
                mov     [bufInput+5], ah

                mov     al,[bufInput+7]
                sub     al,[bufInput+9]

                add     al,[bufInput+10]
                mov     [bufInput+2], ah


                mov     ah, 09h
                mov     dx, bufInput+2
                int     21h

                mov     ah, $08
                int     21h
                ret

    bufInput: db 9,0,9  dup(?), '$' ;
    newLine   db 13,10, 36