start:  .word   123    ; 1 word
        .word          ; 1 word
        .word   1,     ; 2 words
        .word   ,2     ; 2 words
        .word   ,      ; 2 words
        .word   ,,     ; 3 words
        .word   1,,    ; 3 words
        .word   ,,3    ; 3 words
        .word   1,,3   ; 3 words
        .word   1,2,3  ; 3 words

                       ; all the values below are not relocatable.
        .word   r0,wait,r1+1,wait+2,%4,%4+1     ; 0, 1, 2, 3, 4, 5
        mov     #r0,r0
        mov     #wait,r0
        mov     #r1+1,r0
        mov     #wait+2,r0
        mov     #%4,r0
        mov     #%4+1,r0

        mov     wait(wait),r2
        mov     r0(wait),r2
        mov     wait(r1),r2
        mov     r0(r1),r2