原来是什么形式？

data test;
        input company : $ 1. (year1-year3) (: $ 4.);
cards;
A 2000 2001 2002
B 2000 2001 2002
C 2000 2001 2002
;
run;

proc sort data=test;
        by company;
run;

proc transpose data=test out=test1(rename=(col1=year)        drop=_name_);
        by company;
        var year1-year3;
run;