WURCS=2.0/4,4,5/[u2221m][u1122m][u1221m][u2211m]/1-2-3-4/a?|b?|c?|d?}*OC_a?|b?|c?|d?}*OC_a?|b?|c?|d?}-{a?|b?|c?|d?_a?|b?|c?|d?}-{a?|b?|c?|d?_a?|b?|c?|d?}-{a?|b?|c?|d?